I'm using a PCI atheros card in my file server. Unfortunately, it seems as if the link speed is quite low. An iwconfig:
The router/computer are quite close to each other and operating on a channel not shared by any other computers. The slow link speed is causing file transfers to be agonizingly slow.
ath0 IEEE 802.11g ESSID:"Ronpaul08" Nickname:""
Mode:Managed Frequency:2.422 GHz Access Point: 00:21:29:A1:77:5B
Bit Rate:11 Mb/s Tx-Power:18 dBm Sensitivity=1/1
Retry:off RTS thr:off Fragment thr:off
Link Quality=32/70 Signal level=-60 dBm Noise level=-92 dBm
Rx invalid nwid:961015 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0