I have a Studio XPS 13 with Dell Wireless 1515 Wireless-N Adapter. I have a Netgear (54 Mbps 2.4 Ghz 802.11g) WGR614v7 router. The connection drops frequently. But the connection works fine with my old inspirons. Let me know how it goes when you call Dell.

Bala.

I just bought a Studio XPS 13 as well with the 1515, and I was having problems with every WiFi connection I could find.  Then the list would reset, nothing would be found at all, and then after a minute it would repopulate.  After being connected for a few min, it would drop again.  Even being 3 ft from the router.  I chatted with Dell who made me reinstall the driver, and then told me the lamest excuse you could come up with:

"Because the 1515 is an N adapter, and you are trying to connect to a b/g network, these are not compatible."  He wanted me to contact their Priority support team for a fee to reconfigure the router.  Completely unacceptable after just buying the machine yesterday! 

I did my own research and I found the fix to the problem.  The driver included from Dell (as of 3/28/09) and on the website are BAD.

Use these drivers:
http://www.laptopvideo2go.com/forum/index.php?showtopic=15297

v7.6.1.204 with modded INF v1.24 for both Vista x86 and x64
Should work for ALL Atheros Chipset versions

The problem is 100% fixed, and I also can see like 15 wireless networks around me now in the list, as opposed to just the one a few feet from me.  If I didn't find this driver, I would have returned the computer at BestBuy.  Dell maybe you are reading this and can acknowlege this problem and the horrible customer service!

Suffering same. Often requires safe reboot

Just delete the Dell drivers from Device Manger.  (Click uninstall and make sure you check mark "Delete the drivers").  Then reinstall the Atheros drivers from the link above and you should be good to go.

Suffering same. Often requires safe reboot

Yes the drivers found at Support.dell.com are normaly out of date. Tech support will often recomend going to the manufactures website for drivers. I would recomend trying the connection in safe mode with networking. This will help determan if its software or hardware. pls keep me posted on what happens.

Seems to have worked. Thanks

PS. I think driver has been updated to 211

Very helpful. Had the exact same issue with my brand new XPS 13, so thanks!

There seems to be never verison and not WHQL.  What one works the best?

I'm having the same problem with my Inspiron 15.  I've tried the Atheros drivers but I can't connect to any networks at all.  According to the device manager the card is properly installed and the diagnosis wizard can't find out what is wrong.

Any ideas?

Did you delete the old Deel drivers before installing new. (See above on how to do that). That may be important