The problem is not over yet.. I bought Logic express 9 and i still have the error message. I changed the recording directory to the internal harddrive, that seems to help. But i especially bought a FW800 external harddrive for recording my projects.... the harddrive capacity on my imac is not endless.... I suspect the FW drivers have something to do with this problem...
I got this for the first time last night. I wasn't doing anything different from what I've normally done in Garageband, except maybe utilizing a couple more tracks (total was about 11, with only three unmuted).
I was recording with a Blue Snowball (USB) on my new 15" MBP and monitoring with headphones when all of a sudden this huge blast of white noise came screaming through the phones and I actually had to throw them off cause it was so loud. Scared the crap out of me. Then when I looked at the screen, it had the "Disk too slow" error message on it.
I had the exact same thing happen last night. Set up for a podcast and got the disk too slow error about 5 minutes in and clicked continue. Showed that it was still recording. Hit pause about 45 minutes in because my mic started sounding robotic and 42 minutes of recording disappeared. STrangest thing ever. Lost some really good recording. I at least feel better that it's not just me, but it still stinks. I never had this problem with garageband before. I even upgraded to a 7200 rpm drive a while back. Hope they figure this out.