HAHA thats crazy. who takes the time to do that!
Anyways its a logitech K120 its actually pretty new (and clean) so I don't know. I was kind of hoping someone else had the issue too.
I tried changing graphics and whatnot even though I know thats not what it is. Didn't work.
Edit: It's my shift key. I literally got the Wood Boy achievement because I was testing not using shift and for SOME REASON my "sprint special" on Meatboy was perma-mode and so i went through all 20 levels without the glitch/pressing shift. But as soon as I went to a level where I use shift it bugs out. Any ideas? I'm about ready to go buy a 360 controller..they're so expensive though