So I've noticed a problem since upgrading the various G5 towers in our office to FCP 5.1.2... Whenever we slow a clip down beyond a certain speed or do any negative speed at all (including just checking the reverse box), it renders out the clip as a still of the first frame, instead of doing the actual speed adjustment.

Has anyone else had this problem? If so, what's the fix??

No one else has had this problem?? I've got it on 4 different machines with the 5.1 update... Wow, I'm special I guess...