Should be the first thing you do when you encounter problems like that.
Pull a virus scan, use Ad-Aware if you don't have one, it's free.
And clean your registry with CCleaner, it's also free, google it.
Hopefully checking on those things will help.
I'm having a strange issue after my last update of Win XP (I currently have all updates installed).
The mouse is behaving as if the "Automatically move pointer to the default button in a dialog box" option is enabled in the Mouse Properties Control Panel.
I've never had this option enabled, and it doesn't show that it's enabled (checkbox is unchecked), nevertheless the mouse keeps jumping to the default button in any dialog box.
I've tried checking/restarting, and unchecking/restarting the computer, but the mouse behavior remains the same regardless.
Any ideas?

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