Here's a tool I use:
See ShellExView at http://windowsxp.mvps.org/slowrightclick.htm
I have been having user account problems. We have 4 user accounts and only one works properly.
I have and eMachine T3256 Windows XP Service pack 2.
On three of the user accounts when you right click on anything you receive: Windows Explorer has encountered a problem and needs to close.
When I open a new account the same problem returns.
Something is not right ....does anyone have any ideas?