This might actually be your problem with crashing the system. There have been a lot of problems regarding 3rd party RAM. If you search the boards you'll find out more on it. I haven't really read through most of the stuff on it as I haven't had crashes or kernel panics to speak of outside of IE 5.1 on the very first day OS X was installed. I am also going on 9 days without shutting down.Originally posted by Hobeaux
for the record, I started with 256MB on the system (with 20, 40, 80MB applied to photoshop) then canabalized another mac to upgrade it to 512MB (applied 256MB to photoshop). the result is the same, it works most of the time, but when it crashes -- lookout.