We asked for permission to host the file for MSI nForce users and to allow people test what difference the fix made. While we awaited approval, I turned my own system into a guinea pig for the BIOS. Here's what I found: The menus and options within the BIOS have not changed since BIOS 2.4. On flash, I used the /cc, /cd, and /cp switches to clear the BIOS, then I reconfigured the new BIOS to the same settings I had used in 2.4. I saved and exited the BIOS and began booting into Windows 2000 SP2. During boot, I was greeted with a blue screen explaining that my BIOS was not ACPI compliant.
Since then, I've been working with MSI in an effort to resolve the ACPI error and to see if I can get a few of the other smaller errors in the BIOS addressed. It seems my difficulty resolves around having APIC 1.4 enabled. It's possible that doing a fresh OS install might alleviate the problem, but since I know more than a few people are taking advantage of the extended IRQ's provided by APIC, I am hoping to avoid that step.
Despite the difficulties, this is a very good situation. MSI is aware of the problem and is actively working to get the fix out. I have been assured that I will be contacted once the next BIOS build is ready. I hope to have something to share with you all very soon.