According to the Network Utility, I am connecting to my wireless router at 54Mb/sec. I have full bars on the connection also. I did a test transfer of a 1.09GB ISO file, and it takes about 10 min 50 sec. According to my calculations, thats about 1.717 MB/sec or 13.736 Mb/sec.

Any ideas why my transfer speed is less than 1/4 of the rated 54Mb/sec ? What could I do to improve this or fix it?