i have been working on allot of computers that had that problem, but often when you scrolling large amount of text, and at 99% of the cases it ended with me updating the drivers, and after that everything worked ok, and this is just a tip for you to try, if i should be able to point at the problem, then i need to sit in front of your computer and test things my self, but it can be settings or drivers or hardware or any other of the 1000+ reasons why you see this lag. and as i stated before, i have been testing mirc on windows 7, windows vista, and last on windows xp (all 64 bits), and i haven't noticed any problem so far, only thing is that on 64 bits system some things like dialogs and custom windows can look a bit different, and one thing, look so your hard drive don't run in PIO mode. (property's on your hard drive) it should be in udma mode..

if ($me != tired) { return } | else { echo -a Get a pot of coffee now $+($me,.) }