Monitor wakes unexpectedly

This problem pertains to my wife's mini (1.42 GHz, 1 GB RAM, 10.4.3), not my own machine.
We recently had a problem where she couldn't use printer sharing to print through the printer connected by USB to my machine. Resetting the NVRAM seems to have cleared that up, but has created a new problem.
Normally we do not power-down or sleep our machines: we let the displays shut off after a few idle minutes, though. Since resetting the NVRAM on her machine, her display (a Dell 19" LCD, fwiw) will periodically activate itself. I haven't timed the interval, but it seems to happen roughly every 3 hours. I've checked the Energy Saver pref panel, and it seems to be set the way I want.
I'm comfortable dropping into Terminal and munging around in there--if that's the quickest way to fix it, I'm happy to try.
iMac G5 2.0 GHz Mac OS X (10.4.3)

Here's another one; you never know!
A number of sleep-related issues can appear after incremental Mac OSX updates, including the inability to properly go to sleep, problems waking from sleep, and having your display go to sleep without your Mac going to sleep. The most common culprit is Bluetooth. Try these tips to fix your sleep problems.
WAKE UP
In System Preferences>Bluetooth, uncheck Allow Bluetooth Devices To Wake This Computer. If you are using a Bluetooth mouse and keyboard, you'll have to wake your Mac by pressing the power button.
FILE CORRUPTION
Your Bluetooth preference file may be corrupt-you'll need to delete it. Turn Bluetooth off, then go to the /Users/user name/Library/Preferences folder. Look for a file called com.apple.Bluetooth.plist and trash it.The OS will create a new preference file when you enable Bluetooth again.
ENERGY SAVER
If you have issues with a Mac or display that goes to sleep at inappropriate times, you may have a problem with Energy Saver. Delete the following .plist files and restart:
-/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist
-/Users/username/Library/Preferences/com.apple.systemuiserver.plist--(username is your name or System Administrators name).
-/Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist
A restart is very important after deleting these plists. After a reboot your Mac will then generate new ones.
In some cases, running MacOS X's cron tasks-maintenance that the OS performs automatically if you leave your Mac on 24 hours a day-can resolve many sleep problems. If you don't want to leave your Mac on, you can use MacJanitor, Yasu, or OnyX free at Versiontracker.com.
Cheers!
DALE

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Do you have a Hewlett-Packard folder in your Applications folder? Is there an uninstaller in that folder?
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RidgePirate,
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[0x0-0x3d03d].com.apple.ActivityMonitor[358]: dyld: lazy symbol binding failed: Symbol not found: __commpagedsmos
[0x0-0x3d03d].com.apple.ActivityMonitor[358]: Referenced from: /Applications/Activity Monitor.app/Contents/MacOS/Activity Monitor
[0x0-0x3d03d].com.apple.ActivityMonitor[358]: Expected in: /usr/lib/libSystem.B.dylib
[0x0-0x3d03d].com.apple.ActivityMonitor[358]: dyld: Symbol not found: __commpagedsmos
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Code Type: X86 (Native)
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Exception Type: EXC_BREAKPOINT (SIGTRAP)
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Symbol not found: __commpagedsmos
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Powerbook Wakes Unexpectedly

I've searched around the net and this forum and haven't seen any references to this problem.
I'll be watching TV or something and my powerbook will wake up - unprompted by me.
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Maybe airport - network related? Like maybe something trying to get in? I have Limewire installed.
Below is the event according to the log:
Jan 29 00:53:26 chilenets-Computer kernel[0]: System Sleep
Jan 29 00:53:26 chilenets-Computer kernel[0]: System Wake
Jan 29 00:53:26 chilenets-Computer kernel[0]: Wake event 0020
Jan 29 00:53:27 chilenets-Computer kernel[0]: ADB present:84
Jan 29 00:53:28 chilenets-Computer kernel[0]: AirPort: Link Active: "ROUTER" - BLAH_BLAH - chan 6
Jan 29 00:53:28 chilenets-Computer configd[31]: SecKeychainFindGenericPassword err= -25308 ( =0xffff9d24, secErrStr=User interaction is not allowed. ) (current= ROUTER)
Jan 29 00:53:29 chilenets-Computer lookupd[305]: lookupd (version 369.2) starting - Sun Jan 29 00:53:29 2006
Jan 29 00:53:32 chilenets-Computer configd[31]: posting notification com.apple.system.config.network_change
Jan 29 00:53:32 chilenets-Computer lookupd[306]: lookupd (version 369.2) starting - Sun Jan 29 00:53:32 2006
Jan 29 00:53:32 chilenets-Computer configd[31]: setting hostname to "carnitas"
Jan 29 00:54:30 chilenets-Computer shutdown: halt by andres:
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G4 PB 12" Mac OS X (10.4.4)

Hi Andres,
I had the same problem too, one night my powerbook just woke up; I didn't have anything attached to my powerbook. And the screen was all closed, and it when back to sleep by itself...
Heres my log at the time:
Jan 25 09:28:40 localhost configd[86]: SecKeychainItemCreateFromContent err= -60008 ( =0xffff1598) (current= Apple Network)
Jan 25 09:28:43 localhost configd[86]: executing /System/Library/SystemConfiguration/Kicker.bundle/Contents/Resources/set-hostna me
Jan 25 09:28:43 localhost configd[86]: posting notification com.apple.system.config.network_change
Jan 25 09:28:43 localhost mach_init[2]: Server 0 in bootstrap d03 uid 0: "/usr/sbin/lookupd": exited as a result of signal 1 [pid 4867]
So it looks like its something to do with the airport link !?!
This is about the second time that it has ever happened - so its not that much of a drama for me, but its just really strange !
Anyone know whats going on !?!

Monitor wakes unexpectedly

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