Here's a tricky one. My Admin user is playing up. I have xp pro setup with two users. One is Admin the other is Poweruser. It all works fine, untill recently the Admin logon works ok for a while then refuses to respond. By that I mean, I click something, say an icon to open a program, or Win + E to open explorer, and the cursor turns to an hourglass but then dies and nothing happens, and then every time I click something the speaker bings and nothing happens, and I cannot even raise the Start button to log off nor change back to the poweruser logon. All I can do is press my reset button to reboot. Things are ok for a few keystrokes then Bing! Admin dies.

I thought I would be clever and set up a second Admin user. Did that, but it behaves in the same way. Ok to start with then Bing! Nothing.

Poweruser still seems to behave ok. Run AdAware and Spybot they're ok so is AVG, and Kerrio is running.

Any ideas would be welcome.