My PL1600 suffers from problem #1 (selects single CPU mode by default), but not problem #2.
Before installing, I did System Erase, lastest BIOS/ROMPaqs, System Partition then installed 6.0.1 without problems.
Any suggestions for manually changing the default preference on startup?
Also, does anyone have information on how to monitor the system via lm_sensors? The usual sensor-detect process returns no valid sensors.