Have you turned off indexing in your services?
You can also try blowing away your "IconCache.db" in Documents and Settings\ (your profile) \Local Settings\Application Data folder. Reboot for rebuild of the iconcache database file.
Turn off auto-expanding trees in Windows Explorer
I'm sure some of you have noticed that in Windows Explorer, whenever you click a folder in the left pane, it automatically expands to show all subfolders. If you find this annoying, follow these steps...
1) close Windows Explorer if it's running
2) go Start -> Run, then type "regedit"
3) Navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion\Explorer\Advanced
4) Change the value of "FriendlyTree" to 0
5) close regedit, and start up Windows Explorer. Auto-expanding menus are now off
For some reason, microsoft left this option out of the Windows Explorer options.
Cheers!