I have a Dell Latitude 810 with built in wireless. (Not sure what internal wireless board it has--how can you tell?) Previously in XP SP2 the wireless connectivity worked great.
I recently had to reinstall Windows XP. After I got XP up and running I immediately installed the Dell)Wireless (US) WLAN Network Adapter Card driver. I was able to connect to my network (using WPA even) and it worked great with normal speed.
However after I installed XP SP2 the connectivity has been extremely slow. I can still connect the AP but everything is s..l...o...w..... including DNS lookups, web pages, you name it. I've tried other Dell wireless drivers but no dice. I've tried turning the Windows built in zero setup wireless service on and off and on again. It didn't appear to help at all. Any suggestions?