My kids have an old B&W G3 500 and it is $100 stock but for a pair of Ramjet 256MB pc100 CL2 chips. problem is it freezes all the time...curser locks up and they need to hot the restart button..it has bever been a rock solid machine but it is much less stable in osX than in os9. Right now it is running panther. I have tried many combination of ram and it is equally unstable with all of them, so i am not trying to decide what to do. I could replace the HD and or CPU...and or ram. or am I better off starting fresh with something else?