I've got a handful of Dell laptops that recently stopped reconnecting to a wireless network after being on the lan. WLAN shows connected, but can't reconnect until we do a IP refresh. Some machines are running Dell WLAN cards and another is running Intel card.
Can't seem to nail down the problem. One user mentioned she was having this problem after MS updates so wondering if a patch/hot fix is jacking up these machines. To add salt to the wound, I brought my Dell Inpiron 1420 home today...plugged in the network cable..did some work, then decided to move to the couch. Same problem here on my machine.
Any ideas...this is a wacky one.