I've had this problem since around 1.5 release. I've never had any problems with minecraft prior. Anyway, for some reason, I have 3 main problems that show in both Tekkit and vanilla minecraft. 1) I randomly walk sometimes and I can't seem to stop it unless I mash wasd. 2) When I die, it won't let me press respawn or title screen. 3) My game sometimes randomly keeps freezing and unfreezing really fast and showing the desktop even though I have updated my graphics card driver.
Tekkit is completely broken[same with vanilla]