New Ubuntu 12.10 install on a Samsung NP700Z5C-S01UB Series 7 Laptop - 15.6" works great. But when the wireless disconnects (due to moving around), the machine will not scan for new networks unless rebooted? I can check and uncheck wireless on the bug but it will not scan for networks unless rebooted.
Did you set up the connection to re-connect? Here is how....