I just tested my wireless out of the blue trying to find out how well it performs.  So I was connected at 54mbps but I can only achieve about 10mbps throughput.  Any suggestions for optimization?  We do have QoS on the AP and a voice environment but I disconnected everything except for my laptop.  I copied a 700MB file across the link and it took about 10 minutes.
Here is the attached throughput graph.
Can someone without QoS do a throughput test?
Thanks,
Joe