I had backtrack2 and boot with no problems. No with BT3 it hags after initializing serial ports. It only has a FIR port. I tried to disable it at bios, but the same happend.

I hope it could help to ayone

... now, I can boot with bt acpi=off , but no way to start any grphical interface, nor xwindo, neither with flux ... still testing

Ok, last problem done. I had to run xorgcfg to manually specify my vgad river, because the autodetect, doesn't work so well

More info. I can inyect with broadcom 4311 already patched into bt3, but as I know, at just only +/- 10 packets per second, if I don't want to see: write failed: cannot allocate memory