I noticed that my wifi is not working tonight. In the past I could make a call and surf the web or bbm at the same time (when wifi was connected) and I am on verizon.
Tonight, while at home, I cannot do that. But when I get off the call the bbm's go through. Also the internet browsing is very slow (while not on a call) which leads me to believe that it is connecting through 3g only.
My wifi was flakey at home; I rarely even turn it on but I was messing around on the net while watching a movie w my kids and noticed it just didn't want to connect to my router.
Is the wifi logo completely white or greyed out? Have you made any recent changes to your router settings, phone settings, upgraded BB OS at all, etc..? Just need a little bit more info than it just stopped working.