Changing BPMs after loading them

It is weird-tonight at dj residency, some of the songs I played which had a bpm of around 90-100 bpm changed to show they had a bpm of 9 or 10 or 11. I have no idea why it did this, but it didn't happen until I loaded the track. I have also played these mp3s before wtih no weird behavior or problems.

I've had some BPM's display incorrectly as well. One song I have that's 76 bpm shows up as 45 bpm in SSL but if I restart the computer it will sometimes correct this problem... very strange.

I have had some weird BPM's show up too. But if I load the track, it displays the right BPM. Is there a fix for this? I use PCDJ to BPM everything, but I use my ibook to actually play at the club. I usually sort by BPM, and it is all messed up unless I load them all up.

Is there some reason some songs show up as 120.34 and some show 120? Shouldn't they all show up as 120? I don't mind it rounding off, I just want ALL of them too.

Thanks for the help..

Keoni