Problem with speeding up clips in Vegas

[zeiram00]

I use Vegas 9 Platinum and have recently found a problem with increasing playback speed of my video clips.
I recently moved and had my pc shut down for a couple days and when I set everything up and started edited again i discovered the current problem. I've tried using old clips that have been in Vegas before and adding new ones to test out the problem but either way if i try and squeeze (speed up) a clip in vegas the video in that clip goes black. In the timeline i can still see the still frames used for identifing the clip but if i place the cursor anywhere on the clip i get black nothing in the preveiw and the same thing happens if i try playing the clip. But if i try and stretch (slow down) a clip everything works just fine.
I've done hardware/software maintanence, system restore and uninstall/reinstalled the program but the problem still remains. while this isn't a major problem it just plain bugs and confuses me.
Any help would be appreciated. Thanks

[zeiram00]

Problem solved. Disabled resample under switches in clip options