Classic Apps Disabling Monitors Under Mac OS X?

I'm running into an annoying display issue with some of my Classic applications when running them under Mac OS X. Somehow, these apps are able to break Mac OS X's ability to access certain displays the next time I boot up the machine.
The only way to restore access to my displays is to first boot into Open Firmware using the "Command-Option-P-R" key combination, followed by going to the terminal and entering ' sudo nvram boot-args="romndrv=1" ', and then rebooting a second time.
What's disturbing me about this issue, is that it seems like Classic apps still have the ability to alter system level settings when running under a parent OS. This seems like a huge security risk to me.
Any thoughts?
My setup is a Power Macintosh G4/400MHz AGP with an OEM ATI card and an IXMicro twin turbo card, running Mac OS 10.3.9.
Power Macintosh G4/400MHz   Mac OS X (10.3.9)  

Hi! You may like to check that Open Transport TCP/IP extensions in the System Folder have not been disabled or moved. While Mac OS X does provide network services to Classic, Mac OS 9 running within needs to have the Open Transport extensions in order for networking to work in Classic.
Another thing you may want to try is to set up a new location and reconfigure your network details in the Network system preferences. Classic should pick up the changes and run with it, so to speak. If the change jogs Classic into working, you can kill the old location that you used previously.
—tonza

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