As a follow up to my AOL IM crashing post, I now happy to report that iCal is crashing unexpectedly as well . AOL IM has been doing it pretty consistently no matter what utilities I use (Disk Utility and MacJanitor are the ones I use). However, now I'm wondering if there's a larger problem. I have had other programs "quit unexpectedly" on me, but rarely. Just after I posted about AOL IM doing it all the time, I started using iCal and it crashed twice within 5 minutes. Sending a report to Apple does absolutely nothing. Does anyone have any ideas??? I will say that despite having more memory, one possible problem is that my hard drive (60GB) is almost completely full...like it has around 1GB free on it. I plan to purchase a new 80GB hard drive (I wish they could get laptop drives up to 100 by now) soon, but just don't have the money right at this moment. The thing is, though, back when I had a PC running Windows XP, I didn't have problems with my computer applications crashing all the time because of a full hard drive. The computer ran more slowly perhaps, and yes it did crash, but I don't believe it was the amount of stuff on the hard drive that did it. Should I buy any other utilities? I personally think it's worth it to get a disk optimizing one (is TechTools the name of it?). Are there any other ways to figure out what is causing applications to crash? I'm using a 12" 1GHz G4 Powerbook with 512MB of memory (again, soon to be upgraded to at least 1GB if not 1.25 GB, or however one would type 1GB + 256MB). Thanks, sps Thanks.