Strange issue with recently recorded audio...

Hi,

I'm kind of new to using SONAR but I feel like I have a pretty good grasp on what's going on with it.  I should note that I really love it and I've been nothing but happy with it thus far.  I've been using Home Studio XL for a while and other Cakewalk products for years, and I decided an upgrade was due, so I've been recording with it for some time now and I just recently came upon a really strange thing (an incredibly frustrating strange thing at that) that's never happened before.

I've been working on a song for hours now.  It has 25+ tracks of audio, no synths.  I've had no issues with it.  I've been very careful with it and I've been meticulous with the recording metronome so as to have a good clean recording.  After nearly 100 takes of audio and about 2 minutes of music (just to illustrate me being a perfectionist), I try to record a new track of audio and when I stop the recording and it renders the audio that was just recorded, it oddly compresses it so that it's actually shorter than what I actually played.  It sounds slightly sped up is what the consequence is, and it even starts in the mix before where I actually jumped in.  I don't get it.  I've played around with the buffer sizes and stuff like that, but I can't seem to fix it.  And on top of that, after countless tries this morning there was one, just ONE, take that wasn't sped up or compressed or whatever happened with the others.  That was the first take.  The rest have been sped up and it's so very frustrating.  I've shut off all extraneous programs so that Cakewalk is the only non-essential thing running, but that didn't change anything.  So much for finishing this song on my one day off, eh?

Thank you for reading this, and I would greatly appreciate any advice or help given!

Setup:  Sonar Producer X1 (fully updated), M-Audio fast-track Pro, Creative Labs Soundblast X-fi, Windows 7