Are you by chance using a laptop?
Since getting Windows 7 (I had XP), I've been having problems with typing in email, Internet chat, MS Word. The letters will sometimes jump backwards and be placed into another word. Example: Typing the sentence 'how are you today' ... it will type 'how aroe yu today' ... the 'o' in 'you' jumps back into the word 'are'. This happens frequently whether I try to type slow or not. I'm also hitting a key (maybe a combination of keys?) that opens up a menu that I don't want/need. Any suggestions? Thanks (This is whether I'm using Firefox, IE, or Chrome.)