I updated mine today too OTA

I was connected all day on the Wireless at work (Cisco and Extricom Wireless) one thing I noticed before the update was that if I connected to my PC in mass storage mode the Wireless turned off on the phone

Anyway when I got home from work it kept trying to connect to my home wireless and couldnt

It is fixed now, as I did the following

deleted the Wireless connection, reboot the phone and re-add the Wireless connection

Went into the advanced settings and turned powersave off, it connected fine, so went back into advanced and turned powersave back to maximum and its been fine all evening now