If you read the white paper, the two bugs it describes are hardly what I would call "show stoppers".
The two bugs deal strictly with the implementation of ACPI power management interrupt routing and the Suspend to RAM feature. Yes, the first is a bit of a pain as you would have to disable ACPI to get interrupt routing to work 100% properly, and, yes, this means you are no longer compliant with the Microsoft "PCxx" specification. But, when you consider the fact that ACPI support has been, at best, crappy in most boards anyway and that anyone with an iota of common sense disables ACPI in first place for the sake of stability, I have to issue a big "WHO CARES!!!" about this bug.
IMHO I'd hardly call them major problems at all. First of all, in a single processor configuration their is a workaround for it listed in the AMD docs on the 761+686B, though it isnt viable for a dual processor configuration.
One of the bugs deals with Suspend to RAM feature... and tell me, have you EVER seen anyone actually use this feature?
Not all that important at all.
The other bug deals strictly with the ACPI implementation. Now this one is a bit of an issue as it'll keep the interrupt routing from workiong perfectly, at least so long as ACPI is enabled. Still, it's nothing terrible, and I doubt it's going to be a huge issue for most people.
Edit: Anyone else have any thoughts on the matter?