diff --git a/CHANGELOG.md b/CHANGELOG.md
index ddfdfa2..67cf250 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,15 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+## [1.17.2] - 2026-05-29
+
+### Fixed
+- **Memory leaks** — AboutViewModel now properly disposes ManagementObject instances in all 5 WMI foreach loops (CPU, RAM, GPU, Display, OS detection).
+- **Silent failures** — ThemeService Save/Load empty catch blocks now log errors via Serilog instead of swallowing silently.
+- **Dashboard error handling** — replaced 4 bare `catch (Exception)` in alert scanners with logged exceptions for diagnostics.
+- **UI flicker** — BulkInstallerViewModel.FilteredApps converted from ObservableCollection to BulkObservableCollection with ReplaceWith().
+- **Visual consistency** — ShortcutCleanerView DataGrid now has `Background="Transparent"` and `BorderThickness="0"` matching all other views.
+
 ## [1.17.1] - 2026-05-29
 
 ### Fixed
diff --git a/SysManager/SysManager/Services/ThemeService.cs b/SysManager/SysManager/Services/ThemeService.cs
index 7f5104a..6326367 100644
--- a/SysManager/SysManager/Services/ThemeService.cs
+++ b/SysManager/SysManager/Services/ThemeService.cs
@@ -6,6 +6,7 @@
 using System.Text.Json;
 using System.Windows;
 using System.Windows.Media;
+using Serilog;
 
 namespace SysManager.Services;
 
@@ -216,7 +217,7 @@ private void Save()
             var json = JsonSerializer.Serialize(data, new JsonSerializerOptions { WriteIndented = true });
             File.WriteAllText(SettingsPath, json);
         }
-        catch { }
+        catch (Exception ex) { Log.Debug("Theme save failed: {Error}", ex.Message); }
     }
 
     private void Load()
@@ -247,7 +248,7 @@ private void Load()
                 ApplyShade();
             }
         }
-        catch { }
+        catch (Exception ex) { Log.Debug("Theme load failed: {Error}", ex.Message); }
     }
 
     private sealed record ThemeSettings(
diff --git a/SysManager/SysManager/SysManager.csproj b/SysManager/SysManager/SysManager.csproj
index 9ec8279..350dc2e 100644
--- a/SysManager/SysManager/SysManager.csproj
+++ b/SysManager/SysManager/SysManager.csproj
@@ -10,9 +10,9 @@
     <RootNamespace>SysManager</RootNamespace>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <NoWarn>NU1603;NU1701</NoWarn>
-    <Version>1.17.1</Version>
-    <FileVersion>1.17.1.0</FileVersion>
-    <AssemblyVersion>1.17.1.0</AssemblyVersion>
+    <Version>1.17.2</Version>
+    <FileVersion>1.17.2.0</FileVersion>
+    <AssemblyVersion>1.17.2.0</AssemblyVersion>
     <Product>SysManager</Product>
     <Description>SysManager — Windows system monitoring toolkit by laurentiu021. Network, updates, health, logs, safe deep cleanup.</Description>
     <PackageProjectUrl>https://github.com/laurentiu021/SystemManager</PackageProjectUrl>
diff --git a/SysManager/SysManager/ViewModels/AboutViewModel.cs b/SysManager/SysManager/ViewModels/AboutViewModel.cs
index 65a3f8f..5f2c7e3 100644
--- a/SysManager/SysManager/ViewModels/AboutViewModel.cs
+++ b/SysManager/SysManager/ViewModels/AboutViewModel.cs
@@ -278,17 +278,18 @@ private string CollectEnvironmentInfo()
                 using var cpuSearch = new System.Management.ManagementObjectSearcher(
                     "SELECT Name,NumberOfCores,NumberOfLogicalProcessors,MaxClockSpeed FROM Win32_Processor");
                 foreach (System.Management.ManagementObject mo in cpuSearch.Get())
-                {
-                    var name = mo["Name"]?.ToString()?.Trim() ?? "unknown";
-                    var cores = mo["NumberOfCores"];
-                    var threads = mo["NumberOfLogicalProcessors"];
-                    var mhz = mo["MaxClockSpeed"];
-                    sb.Append("CPU: ").Append(name);
-                    if (cores is not null) sb.Append($" ({cores}c/{threads}t)");
-                    if (mhz is uint speed) sb.Append($" @ {speed / 1000.0:F1} GHz");
-                    sb.AppendLine();
-                    break;
-                }
+                    using (mo)
+                    {
+                        var name = mo["Name"]?.ToString()?.Trim() ?? "unknown";
+                        var cores = mo["NumberOfCores"];
+                        var threads = mo["NumberOfLogicalProcessors"];
+                        var mhz = mo["MaxClockSpeed"];
+                        sb.Append("CPU: ").Append(name);
+                        if (cores is not null) sb.Append($" ({cores}c/{threads}t)");
+                        if (mhz is uint speed) sb.Append($" @ {speed / 1000.0:F1} GHz");
+                        sb.AppendLine();
+                        break;
+                    }
             }
             catch (System.Management.ManagementException ex) { Log.Debug("CPU info unavailable: {Error}", ex.Message); }
 
@@ -298,13 +299,14 @@ private string CollectEnvironmentInfo()
                 using var memSearch = new System.Management.ManagementObjectSearcher(
                     "SELECT TotalVisibleMemorySize,FreePhysicalMemory FROM Win32_OperatingSystem");
                 foreach (System.Management.ManagementObject mo in memSearch.Get())
-                {
-                    var totalKb = mo["TotalVisibleMemorySize"] as ulong? ?? 0;
-                    var freeKb = mo["FreePhysicalMemory"] as ulong? ?? 0;
-                    if (totalKb > 0)
-                        sb.AppendLine($"RAM: {totalKb / 1024.0 / 1024.0:F1} GB total, {freeKb / 1024.0 / 1024.0:F1} GB free");
-                    break;
-                }
+                    using (mo)
+                    {
+                        var totalKb = mo["TotalVisibleMemorySize"] as ulong? ?? 0;
+                        var freeKb = mo["FreePhysicalMemory"] as ulong? ?? 0;
+                        if (totalKb > 0)
+                            sb.AppendLine($"RAM: {totalKb / 1024.0 / 1024.0:F1} GB total, {freeKb / 1024.0 / 1024.0:F1} GB free");
+                        break;
+                    }
             }
             catch (System.Management.ManagementException ex) { Log.Debug("RAM info unavailable: {Error}", ex.Message); }
 
@@ -314,15 +316,16 @@ private string CollectEnvironmentInfo()
                 using var gpuSearch = new System.Management.ManagementObjectSearcher(
                     "SELECT Name,DriverVersion,AdapterRAM FROM Win32_VideoController");
                 foreach (System.Management.ManagementObject mo in gpuSearch.Get())
-                {
-                    var name = mo["Name"]?.ToString()?.Trim() ?? "unknown";
-                    var driver = mo["DriverVersion"]?.ToString() ?? "";
-                    var vram = mo["AdapterRAM"] as uint? ?? 0;
-                    sb.Append("GPU: ").Append(name);
-                    if (vram > 0) sb.Append($" ({vram / 1024.0 / 1024.0 / 1024.0:F1} GB VRAM)");
-                    if (!string.IsNullOrEmpty(driver)) sb.Append($" driver {driver}");
-                    sb.AppendLine();
-                }
+                    using (mo)
+                    {
+                        var name = mo["Name"]?.ToString()?.Trim() ?? "unknown";
+                        var driver = mo["DriverVersion"]?.ToString() ?? "";
+                        var vram = mo["AdapterRAM"] as uint? ?? 0;
+                        sb.Append("GPU: ").Append(name);
+                        if (vram > 0) sb.Append($" ({vram / 1024.0 / 1024.0 / 1024.0:F1} GB VRAM)");
+                        if (!string.IsNullOrEmpty(driver)) sb.Append($" driver {driver}");
+                        sb.AppendLine();
+                    }
             }
             catch (System.Management.ManagementException ex) { Log.Debug("GPU info unavailable: {Error}", ex.Message); }
 
@@ -341,18 +344,19 @@ private string CollectEnvironmentInfo()
                 using var dispSearch = new System.Management.ManagementObjectSearcher(
                     "SELECT CurrentHorizontalResolution,CurrentVerticalResolution,CurrentRefreshRate FROM Win32_VideoController");
                 foreach (System.Management.ManagementObject mo in dispSearch.Get())
-                {
-                    var w = mo["CurrentHorizontalResolution"];
-                    var h = mo["CurrentVerticalResolution"];
-                    var hz = mo["CurrentRefreshRate"];
-                    if (w is not null && h is not null)
+                    using (mo)
                     {
-                        sb.Append($"Display: {w}×{h}");
-                        if (hz is not null) sb.Append($" @ {hz} Hz");
-                        sb.AppendLine();
-                        break;
+                        var w = mo["CurrentHorizontalResolution"];
+                        var h = mo["CurrentVerticalResolution"];
+                        var hz = mo["CurrentRefreshRate"];
+                        if (w is not null && h is not null)
+                        {
+                            sb.Append($"Display: {w}×{h}");
+                            if (hz is not null) sb.Append($" @ {hz} Hz");
+                            sb.AppendLine();
+                            break;
+                        }
                     }
-                }
             }
             catch (System.Management.ManagementException ex) { Log.Debug("Display info unavailable: {Error}", ex.Message); }
 
@@ -377,12 +381,13 @@ private static string DescribeWindows()
             using var searcher = new System.Management.ManagementObjectSearcher(
                 "SELECT Caption,BuildNumber FROM Win32_OperatingSystem");
             foreach (System.Management.ManagementObject mo in searcher.Get())
-            {
-                var caption = mo["Caption"]?.ToString()?.Trim() ?? "";
-                var build = mo["BuildNumber"]?.ToString() ?? "";
-                if (!string.IsNullOrEmpty(caption))
-                    return $"{caption} (build {build})";
-            }
+                using (mo)
+                {
+                    var caption = mo["Caption"]?.ToString()?.Trim() ?? "";
+                    var build = mo["BuildNumber"]?.ToString() ?? "";
+                    if (!string.IsNullOrEmpty(caption))
+                        return $"{caption} (build {build})";
+                }
         }
         catch (System.Management.ManagementException ex) { Log.Debug("WMI OS info unavailable: {Error}", ex.Message); }
 
diff --git a/SysManager/SysManager/ViewModels/BulkInstallerViewModel.cs b/SysManager/SysManager/ViewModels/BulkInstallerViewModel.cs
index e7b1d14..617a894 100644
--- a/SysManager/SysManager/ViewModels/BulkInstallerViewModel.cs
+++ b/SysManager/SysManager/ViewModels/BulkInstallerViewModel.cs
@@ -25,7 +25,7 @@ public sealed partial class BulkInstallerViewModel : ViewModelBase
     private CancellationTokenSource? _cts;
 
     public BulkObservableCollection<InstallableApp> Apps { get; } = new();
-    public ObservableCollection<InstallableApp> FilteredApps { get; } = new();
+    public BulkObservableCollection<InstallableApp> FilteredApps { get; } = new();
     public ICollectionView GroupedView { get; }
 
     [ObservableProperty] private string _filterText = "";
@@ -344,9 +344,7 @@ private void ApplyFilter()
             filtered = filtered.Where(a =>
                 a.Name.Contains(FilterText, StringComparison.OrdinalIgnoreCase));
 
-        FilteredApps.Clear();
-        foreach (var app in filtered)
-            FilteredApps.Add(app);
+        FilteredApps.ReplaceWith(filtered);
     }
 
     private static string GlyphForCategory(string category) => category switch
diff --git a/SysManager/SysManager/ViewModels/DashboardViewModel.cs b/SysManager/SysManager/ViewModels/DashboardViewModel.cs
index 3c115ee..3c2687c 100644
--- a/SysManager/SysManager/ViewModels/DashboardViewModel.cs
+++ b/SysManager/SysManager/ViewModels/DashboardViewModel.cs
@@ -173,9 +173,9 @@ private void UpdateGpuUsage()
                 });
             }
         }
-        catch (Exception)
+        catch (Exception ex)
         {
-            // No NVIDIA or driver issue — GPU stays at default values
+            Log.Debug("GPU polling unavailable: {Error}", ex.Message);
         }
     }
 
@@ -370,7 +370,7 @@ await runner.RunScriptViaPwshAsync(
                 }
             });
         }
-        catch (Exception)
+        catch (Exception ex) { Log.Debug("Alert scan failed: {Error}", ex.Message); }//
         {
             System.Windows.Application.Current?.Dispatcher.BeginInvoke(() =>
             {
@@ -425,7 +425,7 @@ private Task ScanEventLogAsync(DashboardAlert alert)
                 }
             });
         }
-        catch (Exception)
+        catch (Exception ex) { Log.Debug("Alert scan failed: {Error}", ex.Message); }//
         {
             System.Windows.Application.Current?.Dispatcher.BeginInvoke(() =>
             {
@@ -458,7 +458,7 @@ private Task ScanWindowsFeaturesAsync(DashboardAlert alert)
                 }
             });
         }
-        catch (Exception)
+        catch (Exception ex) { Log.Debug("Alert scan failed: {Error}", ex.Message); }//
         {
             System.Windows.Application.Current?.Dispatcher.BeginInvoke(() =>
             {
diff --git a/SysManager/SysManager/Views/ShortcutCleanerView.xaml b/SysManager/SysManager/Views/ShortcutCleanerView.xaml
index 3a40a22..9ba9ff1 100644
--- a/SysManager/SysManager/Views/ShortcutCleanerView.xaml
+++ b/SysManager/SysManager/Views/ShortcutCleanerView.xaml
@@ -56,9 +56,9 @@
         <DataGrid Grid.Row="2" ItemsSource="{Binding BrokenShortcuts}"
                   AutoGenerateColumns="False" IsReadOnly="False"
                   CanUserAddRows="False" CanUserDeleteRows="False"
-                  CanUserSortColumns="True"
-                      CanUserResizeColumns="True"
+                  CanUserSortColumns="True" CanUserResizeColumns="True"
                   HeadersVisibility="Column" GridLinesVisibility="None"
+                  Background="Transparent" BorderThickness="0"
                   Margin="28,12,28,0"
                   VirtualizingPanel.IsVirtualizing="True"
                   VirtualizingPanel.VirtualizationMode="Recycling">