Blue Screen on start up with dual monitors

I have a macpro running Mac OS X 10.5.6 (9G55) when 2 monitors are hooked up to it the computer the machine Blue Screens on start up. This also occurs when the computer wakes up from a deep sleep. Currently the only work around is to just use one monitor. Ive read the posting here and on macosrumors.com, but there does not seem to be a solution, however most post are from last summer. Was this fixed at some point? Is there a solution? I also tried boot from another drive (from another macpro) with both monitors hooked up and the problem continues.
Ive also read the KB article and removed ApplicationEnchancer.bundle, but the problem continues.
http://support.apple.com/kb/TS1545?viewlocale=en_US
Any help would be much appreciated.
Thanks,
Scott

Scott,
Ok here are the next things on my list, and I will start with what I think is the most valuable to the just plain fun and simple you and I would be shocked if it fixed it. I only skimmed your other post, if you feel that something I recommend is a repeat you can ignore it and I will not take any offense. Sorry If my post is a little loopy I've been up for way to long.
1) Safe Boot your mac. To do so hold shift whilst your Mac boots. Please note it will take longer to load.
Starting up into Safe Mode does several things:
1. It forces a directory check of the startup volume.
2. It loads only required kernel extensions (some of the items in /System/Library/Extensions).
3. In Mac OS X 10.3.9 or earlier, Safe Mode runs only Apple-installed startup items (such items may be installed either in /Library/StartupItems or in /System/Library/StartupItems; these are different than user-selected account login items).
4. It disables all fonts other than those in /System/Library/Fonts (Mac OS X 10.4 or later).
5. It moves to the Trash all font caches normally stored in /Library/Caches/com.apple.ATS/(uid)/ , where (uid) is a user ID number such as 501 (Mac OS X 10.4 or later).
6. It disables all startup items and login items (Mac OS X 10.4 or later).
7. Mac OS X 10.5.6 or later: A Safe Boot deletes the dynamic loader shared cache at (/var/db/dyld/). A cache with issues may cause a blue screen on startup, particularly after a Software Update. Restarting normally recreates this cache.
http://support.apple.com/kb/HT1564
2) Try reseting the Pram.
Resetting PRAM and NVRAM
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6. Release the keys.
http://support.apple.com/kb/HT1379
3) Reset the startup Disk. Open System Preferences -> Startup Disk -> Select Mac OS X.
I'll leave you with that, please come back with your results.
Weston

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