Hi all My cube, 1.2GHz Giga CPU upgrade, 120GB Seagate, 1.5GB RAM, has developed a habit of "freezing". Completely locked up, mouse cursor will not move. Have to cold boot. It appears random, but I can reproduce the symptom reliably when installing Halo - it always freezes at the same point on copying a particular file. I have booted from my Powerbook in Target mode, and the problem persists. If I boot my Powerbook from the Cube disk in target mode, the problem doesn't occur. It seems to be a problem which occurs when the cube cpu runs particular code. I am wondering if I should try the Cube hardware test disk, but don't know where to get hold of one. I'm in the UK if anyone has one. My next step is to replace the original CPU (450MHz) to see if I can peg the problem to the CPU upgrade. Regards Alan