speed up: does it ALWAYS do this or only when your pc is busy?
Dont know, only occured once so far, as my PC rarely "jerks" for a second. Will play around with it more and see if I can get my system to do it again.
[EDIT] Using FRAPS little video recording system, apparantly it occurs only when the PC is busy.
(for instance, my HD thrashing around finding space to put said recording down onto)
On another note, are you supposed to be allowed to clear a level without picking up the pod (or whatever it's called you tractor in)? Just realized I can just climb the horizon and it clears the stage without said pod.