9.2 -> 9.3, lost wireless

I finally got around to updating my laptop from 9.2 to 9.3. And now the wireless doesn't work. Everything seems to be okay, but it won't get an address if in dhcp. Will let me set a static ip, but won't even ping the router. I did an online update via wire last night, no joy. This is a built in wireless b in a 2 yr old toshiba laptop. It's been working in 9.1 and 9.2. Shows up as an Intersil Prism or something like that. Can anyone give me some troubleshooting ideas? Thanks, Joe