Question : Wireless running slow

Hello, I have a client that is constantly running slow on the wireless he has two Access Points, a Cisco and a 3com. At first I thought the problem was with one of the AP's or something causing a large amount of packet flow on the AP's. But when I check the logs everything looks fine, but this is were it gets interesting, I changed his DNS from the server to a Open DNS server and then the wireless starts running faster. Now keep in mind that the LAN machines run just fine it is only the wireless tablets. I also have another client that is not running wireless and their DNS does the same thing, but they sometimes get random  404 errors and they can do a refresh and it come up. Does any one have any ideas?

Answer : Wireless running slow

Since you mentioned that changing DNS servers seemed to speed things up, it just could be that name resolution is having a problem.

Random 404 errors are a part of life on the Internet.  We have two DS3s and we still get 404 errors.

Can you go to http://www.speetest.net and pick a server near you and do a speed test from both a wired and a wireless?

With 54Mbps wireless and doing encryption, the best you will most likely get is about 15-20 Mbps.  

You may want to install something like wireshark (http://www.wireshark.org) on one of the wireless computers and do a packet capture or two to see if you can tell if it is all Internet traffic or just some of it.  You mentioned that changing DNS server improved things, it just could be for some reason the wireless devices are having problems doing name resolution, which will make everything slow.