Thanks for replying Waaza, I didn't realize anyone had responded.
I have tried to remove everything that's been added recently to see if that was the trouble but it still seems to be happening. I make recordings for work so it's vitally important that they sound professional, but every time I think I have a good take, I hear all these sound drop outs happening. I thought maybe it was the AutoTrim, so I tried lowering it to -40db and also turning it off completely, but it still seems to be happening. I have even upgraded my RAM from 1 gig to 2 thinking that would help, but it didn't help at all. Will have to keep troubleshooting I guess.
Thanks!
Beth