Interesting. Well, worst case, it's just a mini-pcie card, you can replace it with another card that is better supported by your distro. They go for about $30 where I'm at.
When I opened mine for my memory upgrade (2GB, which was extremely worth it), I looked for mini PCI-E slots. There is one missing slot (solder points on mobo, but no slot... ) and there is a half-height Broadcom 2 antenna unit in a real slot. I've considered swapping to a combo Bluetooth + 802.11n unit, but haven't found any deals on models that also have reported success in Linux.