Was having issues with crashes from GPU and followed the directions here: http://ubuntuforums.org/showthread.php?t=2127593 to get that sorted (not sure if completely fixed though). I did a reboot and since have not been able to connect to wireless (have a Broadcom BCM4313 on board).
Tried another reboot as well as rebooting Modem in addition to forgetting network and starting from scratch but nothing, cycles round and round and then asked for pw over and over.
No other access to Internet except phone so posting logs may be difficult but willing to do whatever needs to be done.
Running 12.10 on an Acer laptop.