If all menus in XP lock up, then the problem is not in mIRC, because mIRC can't control that. If mIRC did something that would effect other programs like that, Windows would promptly terminate mIRC, so if mIRC continues to run, it means the problem most likely lies in Windows. The only suggestions I can think of are first of all, are you using something like StyleXP or some other 3rd party theme engine for XP? Then that particular program might have a bug, try disabling it and see if it still happens. Also, you may be experiencing the now infamous XP SP1 performance hits. Not much you can do about that though since MS refuses to admit the problem even exists. They have fixed some causes of it, but not all. I'd recommend you go to Windowsupdate and download all updates that are available if you haven't already.
