Lately, my macbook pro has been giving me severe hard lockups (it'll just freeze, meaning I have to hold down the power button to turn it off). Playing games on it for long amounts of time, or if I'm doing a lot of things at once (to the point where it's paging out) will freeze the machine - yet I can still move the cursor around and audio carries on playing. I've done a search on this, and seen that a lot of people are having problems with lockups when it comes to external displays - well, I have no external display, the only 3rd party attachments to the machine are a Logitech VX Revolution, and 2gb of Crucial RAM (both of which have been with the machine since I bought it)... My Macbook Pro is out of warranty now (by 2 months) and it was bought as a refurb - it's an original 15" 2.0ghz Core Duo with the 100gb 7200rpm harddrive. It gets extremely hot, even though I have the fans at 5500rpm virtually all the time (even now it's at 50˚C and I just have safari open), could my lockups be down to temperatures/bad thermal paste - or is it something more sinister? [Edit] Just noticed something in the CrashReporter log, it seems every time the machine has crashed, there has been an error in the FanControlDaemon, could smcFanControl be messing things up?