with opening Windows Explorer, or My Computer, or in any Microsoft Office documents when you goto File > Open?
It's just a thought, but those problems can occur when you have a mapped drive where the drive is on a network but the network is failing to respond, or turned off.
However, that would have to mean that the Start Menu has some sort of shortcut link to the mapped drive on the network, and even then, it would only cause problems when you are ''not'' logged on to a network.
But re-reading your post, you say it only happens on an account that you use for your network. So is the network running when this happens, and does the Start Menu for that account have any sort of link to the network?
What is the makeup of your network?
I have Classic Start Menu turned on. When I click on Start, Programs, an empty box appears and it takes about 30 secs to have the program listings to populate the menu. very annoying. It works ok when logged into these PC's with a local account but when logged in as a network account it happens. I'm wondering if some Group Policy is being pushed out to cause this.
changing the below setting does not affect it