acpid reports insteresting messages as my screen is constantly blanked

So I've been having serious power-management issues with this machine (S76 daru2) for a little while now, and I always wrote this off as part of the power manager dimming the screen before. Now I'm getting the screen blanking without the power manager doing anything, so I think it may be its own issue.

Attached is my /var/log/acpid, and in it you will see that periodically there is a report of an event being received. I have watched closely and each time these 8 lines are printed to the acpid log file, my screen goes blank until I move either my mouse cursor or hit a key. These lines are very consistent, and nothing seems to be printed to syslog or messages when this happens either. Let me know if you need anything else.

Here's a sample of the log output:
[Tue Nov 6 07:25:55 2007] received event "processor P001 00000080 ffffffff"
[Tue Nov 6 07:25:55 2007] notifying client 5176[107:116]
[Tue Nov 6 07:25:55 2007] notifying client 5515[0:0]
[Tue Nov 6 07:25:55 2007] completed event "processor P001 00000080 ffffffff"
[Tue Nov 6 07:25:55 2007] received event "processor P002 00000080 ffffffff"
[Tue Nov 6 07:25:55 2007] notifying client 5176[107:116]
[Tue Nov 6 07:25:55 2007] notifying client 5515[0:0]
[Tue Nov 6 07:25:55 2007] completed event "processor P002 00000080 ffffffff"

My system info:
 * S76 daru2 (here's the hardware info that S76 puts up about the daru2 http://knowledge76.com/index.php/Daru2)
 * Rather fresh Ubuntu Gutsy 7.10 install (installed last week)
 * acpid 1.0.4-5ubuntu8