Hello, I'm a newbie here but have used Macs for over 10 at my job. I have a G4 dual 1gig system that has never really run right. I get random hangs, the system just freezes no mouse movement nothing. Today I reinstalled OS X to try and fix the issue to no avial. The room its in is a bit warm but not uncomfortable to work in. The system is in a good spot for air circulation. I guess my question is: Is it normal for the processor heatsink to be so hot that you cant hold your hand to it very long? This one is HOT, this was my first G4 system so I don't have anything to compare it to. Thanks for any feedback you can provide.