You might want to disclose how long it took so we can calculate your actually transfer speed.
The best you can do with a 54Mbit/sec connection is about 25Mbits/sec transfer speed. If your 100Mbit/sec PC's are setup for 100baseTX-FDX (full duplex) you should get about 80Mbit/sec. That's about 3 times faster than the maximum wireless speed.
However, reality and maximum wireless speeds are quite different. My guess(tm) is that you're getting much less than 25Mbits/sec. For example, if you have 802.11b compatibility enabled, your maximum transfer speed will be about 14Mbits/sec or almost 6 times slower. If you have any interference, or your connection speed is less than54Mbits/sec, the numbers will decrease proportionally.
This is stolen from an Atheros PDF at:
Non-overlapping Modulation Max Max Max Channels ------- | Link TCP UDP | | | | |802.11b 3 CCK 11 5.9 7.1 802.11g (with 802.11b) 3 OFDM/CCK 54 14.4 19.5 802.11g only 3 OFDM 54 24.4 30.5 802.11g turbo 1 OFDM 108 42.9 54.8 802.11a 13 OFDM 54 24.4 30.5 802.11a turbo 6 OFDM 108 42.9 54.8
The paper claims that encryption is enabled for these calculations, but my numbers seem to indicate that these number are for encryption disabled. Dunno for sure. The Max TCP and Max UDP are the theoretical maximum thruput rates. I don't have numbers for the various Turbo and SuperG modes.