I dug out the Diagnostics disk and booted from that. I got confused by the patterns that appear for the Video RAM check - the first couple of times I though this was a symptom of another crash - and I force-rebooted out of the diagnostics once or twice. However, I got a feeling that perhaps there was a problem with memory so I took out the 512Mb RAM module, ran the tests again with a base 128 Mbyte system and everything passed. Then I re-inserted the 512 Mb memory module, re-ran the tests, and once again everything was OK. Next step was a boot into single-user mode to run fsck, which also came up OK - no problems revealed. Finally a full reboot into normal mode was successful, and it's been OK since then, with a couple of reboots, and at least one 'wake from sleep'.
There no new hardware or software that might have triggered the panics; the system has not been changed since I installed the 10.2.8 upgrade a few weeks ago. I've had the Powerbook some three months or maybe a bit longer.
So basically the position is that I had a very unstable system - unusable, in fact - which I seem to have remedied by re-seating a RAM module ( which was bought with the PB from a UK Apple Centre). This is a common issue on Windows PCs of course, but it's not one I've heard much mention of in the Mac world, esp. not with new Powerbooks. Have others on the list encountered this sort of thing?
Tom Burke
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