Shell Problems Shell Menus ShellExView Utility NirSoft Utilities
buShell.dll - Large delay when right-clicking on Explorer file/folder.

ShellExView enabled me to remove duplicate "Icon Overlay Handler" extensions. For example I removed Backup Shell (2 of 3), Dropbox Shell (7 of 8), and Carbonite Explorer (2 of 3). Leaving one of each, maintained the extensions functionality, while eliminating my sluggish context menu problem caused by the duplicates. Thanks!

The details of the shell extension that might cause the problem:

Shell Extension Name:  
Filename: buShell.dll
Description: Backup Shell
Company: Symantec Corporation
Product Name: Backup
File Version:
CLSID: {F7CAA2A1-67A2-44BB-B20F-202FD8EB1DAB}

If you think that you have similar problem in your system, you can try to fix the problem by disabling the specified shell extension. In order to do that, simply follow the instructions below:

  1. Download and run the ShellExView utility from this Web page.
  2. Find the right shell extension according the details specified above.
  3. Select this shell extension and press F7 to disable this extension. After disabling the shell extension, check if the problem still occurs. If the problem still occurs, you should enable back the shell extension by pressing F8, and then try to search for another shell extension that might cause your problem.

This shell extension problem was reported by OldWhatsHisName