Went to Fry's Electronics yesterday. Bought a cheap PC fan for $3.99+tax. Put it in this morning, loose, sitting cockeyed on top of the optical drive. But the air flow is directed over the processor. And I switched the processor to 1.8ghz, up from 1.73Ghz. Well now the Mac is running at 1.8Ghz with no freezes yet. So, I guess the freezes were due to heat. Drives are also about 10º cooler! Best $4 I've spent in a while! The processor switches allow for 2.0Ghz, which I've tried, but I just don't think I can get there. It boots into Open Firmware and then when you type "mac-boot" it boots to a kernel panic. Think I've reached the limit here.