Yes, I'm having the same problem, and I'm not using foot pedals. What happens is this:
1. I load an mp3 file.
2. Save this mp3 file as a dictation file (.dct).
3. Computer pops an error message saying I have no space left on my hard drive.
This doesn't happen every time, though, so I thought it was just my computer. But then my friend started using Scribe on her computer, and it happened to her, too.
It really messes up my computer for days, too, even after I delete the .dct file. What gives?