Im guessing your laptop as 512 meg of ram, I get this on all vista pcs with that much memory or less. Also, I get it on XP on pcs with 128meg of ram... its just the lack of memory. Ubuntu has the same issues but it deals with them in a different way, it always catches the keystrokes but sometimes it gets them in the wrong order if you type too fast. Basically im guessing your running vista on a machine that cant cope.