Ok, This was because I updated the kernel but not the restricted modules (they weren't available at the time...)
After rebooting into the old kernel and re-updating, the new restricted modules were installed and my wireless now works fine again... It seems from the forums that other people were also experiencing the same problem - perhaps there should be a warning if you update the kernel but not the restricted modules (if you have them installed)? I know this has a pretty simple solution, but it can still totally break things, like the net connection, which can be a somewhat painful experience!! -- [Feisty] Atheros wireless broken by update on 13-03-07 https://launchpad.net/bugs/92169 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
