FreeBSD-Current on hp nc6220

Has anybody run current on this hardware? I'm having extreme problems using it. It worked well until I cvsupped some time ago (Sorry, don't know the date).
The box basically hangs, I believe due to cpufreq/ACPI lowering the CPU speed. The box essentially freezes (if I trigger a beep, the beep will just continue).
The box runs fine until about 3 seconds after boot with the acpi module, longer without, and it even longer in "safe mode" which I'm not entirely sure what it does.

The problem is, I can't even keep the box up long enough to build world on it, to see if maybe the problem is fixed in a more current revision. I really don't want to
reinstall using a new snapshot, as I've installed a lot of software there that would take forever to reinstall. If there is a way to keep it running for at least a
few hours, I'm sure I could build world.

So essentially I have 2 questions: 1) How can I get this box running, and 2) Is this known/fixed/broken?

I'd really appreciate some insight, nothing special happens on the console even with acpi debug turned on.

Also, what exactly is safe mode? (Sorry for the ignorance)

-eric