Internal file transfer seems too slow

Internal network – Server 2003 2 gigabit cards connected to a gigabit wireless router and transfering an 80GB file to a client connected to the Wireless G router at 54mbs.

The file get’s finished transfering and the resultent calculations shows a transfer speed of aprox 2mbs. There are only 6 other boxes sharing this wireless connection and none were transfering any files at the time.

Cards are in full duplex mode and router us also full duplex. Performance log on the server shows both cards have fill 1BG bandwidth so cards seem fine. Everything works great just seems awefully slow.

Any ideas, I’m having a hard time understanding why the transfer is sooo slow.