I had a very similar problem with my Dell 1350 mini pci card. Didn't notice any interference with my wireless phone, which is 3' from my access point. I did have to go back to version 3.40.73 /3.40.74 utility, A04 of driver and utility. Hit http://www.dell.com/support/home/us/en/19?c=&l=&s= search for R81433.exe. I know it sounds crazy to go back, let me explain why I tried. In October 2004, I bought an Inspiron 5160. Had the 1350 wireless card and worked great. In March 2005, bought a Latitude 610. The wireless card was extremely flaky, disconnecting "all the time". I am talking I made a 50' patch cable so I could leave my office plugged in. Support could not fix it. Support sent me a new card. I swapped the cards between laptops. The Inspiron worked and the Latitude didn't. Support was very willing to help, but I only have so much time to be on the phone with them. Recently, the Inspiron hard drive crashed. Had to replace it. Again, sounds crazy, but I am glad I didn't have a backup. I installed the latest drivers from Dell's site, and the wireless card started disconnecting. I couldn't find the old drivers from the Inspiron. Called support and they pointed me to the old driver that shipped on my Inspiron. That is the r81433.exe listed above. I have installed the old driver on both machines, and things seem to be working great. I use Windows to manage the wireless cards, not Dell's utility. Now for something I can't explain. I tried two Belkin PCMCI wireless cards in the Latitude. They seemed to work the same as the Dell 1350. Can't explain it, just thought you should know. Give the old driver and the Dell 1350 a shot.
