Before I installed Snow Leopard I had no idea this error existed. Now I get it every 3 bars. Its really sad actually, I can't even enjoy making music when everything stops all the time. Logic 8.0.2 OS X 10.6.1 iMac Computer 3.06 GHz Intel Core 2 Duo 4 GB 800 MHz DDR2 SDRAM Internal Hard drive (not sure how to check) Lexicon Alpha Audio interface. As for my set up. I run all of my files off of my internal hard drive (i know, bad). I've never had trouble with this before, and now I have trouble when just 5 tracks are being played at once. I have my computer hooked up to a Lexicon Alpha box, which that box is hooked up to two speakers, I also have a mic coming into the Lexicon box. I have an Axiom 61 Keyboard hooked up to my computer via USB. ------------------- A few days ago I downloaded stem files from a band, it was about 40 or so tracks, and they were Huge files. I put them all in logic and I got the error that I hate now "Disk is too slow or system overload." I figured my computer could not handle so many files, but to my surprise I found out it was doing it on all of my songs I'd recorded in the past. I read around and saw that messing with buffer settings could help, but I have been unsuccessful so far in fixing my new problem. I honestly think that this has something to do with Snow Leopard, but it could be a setting or it could be a that i need to get an external hard drive. Either way, how can I start singling out what the problem is? Thanks!