I installed SourceMage Linux on my laptop and the ethernet and wireless interfaces don't exist after loading the required modules (tg3 and ath9k). On other distros (Xubuntu, aptosid) the networking worked.
lspci:
02:00.0 Ethernet controller: Broadcom Corporation Device 1692 (rev 01)
08:00.0 Network controller: Atheros Communications Inc. Device 002e (rev 01)