I run BT4 on a HDD install on a tri-boot with Win 7 and Ubuntu 10.4 on this laptop.
Ubuntu, Win7 works great.
I would NOT recommend it for BT4.

Working out the box:

Wifi, Injection, that is pretty much it.

Not working out the box, the rest. =( Let me explain:

Graphics: integrated Intel, you would need some google searching to get it working at the resolution you want. Even after I got the res' as I want, everything on screen seems "laggin" while dragging windows, etc...
(I still did not figure it out)

Ethernet: Marvell 88e8059 Gigabyte lan. dose not work out the box, I did not get it working yet, I tried numerous "solutions" but none actually worked. I am still trying to solve these problems.

# Processor: 2.1GHz Intel Core i3-330M Processor
# Memory: 4GB (2GBx2) DDR3 1066MHz RAM
# Video Card: Intel Graphics Media Accelerator HD Total Available Graphics Memory of 1759MB (max.)
# 500GB 5400RPM Hard Drive
# 15.5 Widescreen LCD Display (1366 x 768)
# Integrated Wireless LAN: Atheros 802.11b/g/n Wireless Network Connection (802.11b/g/n )

Bottom line is, if you want to put your time on pentesting and not hardware issues, do not get this laptop.