Hi friends,
I have been using ubuntu 10.04 for the last one and half year without a problem, until recently when I am not able to login to my institute wi fi proxy server.

Kinda strange thing is I am getting Wifi signal but internet do not seem to be working. while all other system on the same floor seem to be working very fine using Wi fi connection.

I tried taking my laptop to other building within the campus to my surprise I found I was able to login and internet works over. Its beyond my understanding.

I even tried resetting wifi but it didnt work.

Please note every thing was working fine until I installed google chrome extension "my chrome theme" extension. I am not sure whether this could be the reason please HELP

another important thing is that internet through LAN works perfectly fine.