I have multiple Vista Ultimate machines and this particular problem happens on all of them.
When trying to open a WindowsExplorer (Not InternetExplorer) every other windows refreshes before it opens. And when you have bunch of windows open it take 2-4 seconds. But once open navigating the folders doesn't cause this.
When I create a new profile (a new user profile) this doesn't happen right away. It starts after a while. So far I haven't been able to pinpoint what causes it to start. But when it starts it always does it and I can't get rid of it.
Wanted to see if anyone else is experiencing this and if there is a fix for it.