My run of good luck changed with the first lockup in 2 weeks. I think the last update for ACPI mostly corrected my problem so I think this is a multi-symptom issue.
I am still using Nvidia proprietary drivers and compiz and have ACPI turned on with the display to sleep in 11 minutes on AC (desktop). I am back to running 32-bit 2.6.24.20 since my attempt with 2.6.25 showed no previous improvement.
My run of good luck changed with the first lockup in 2 weeks. I think the last update for ACPI mostly corrected my problem so I think this is a multi-symptom issue.
I am still using Nvidia proprietary drivers and compiz and have ACPI turned on with the display to sleep in 11 minutes on AC (desktop). I am back to running 32-bit 2.6.24.20 since my attempt with 2.6.25 showed no previous improvement.