My laptop had been asleep and when I opened it, it had frozen. Then on restarting it, it did not run cat v4, so checking the diagnostics it said that there was no lower memory.

The last time I upgraded was when apple last released it on the net to 10.4.7. Nothing else has change, no new software etc, since.

I was running 4.06m57 with no problems before this happened, (and all other versions also).

G4 15' powerbook 1.5GHz

Had 1g ram top slot and 512mb lower slot that is not seen.

Spooky