Wireless Adapter is not working anymore

view story

http://askubuntu.com – I installed Ubuntu 12.04 on my Acer laptop and everything was just fine. In some point (maybe after I installed some updates) the wireless adapter stopped working. There are lots of people have this problem too, but I looked through lots of answers and still not working. re-installing the bcmwl-kernel-source didn't work either. what should I do Thanks (HowTos)