Wifi tries to connect even though I am connected using 3G

[Gabriel <rossetti gabriel gmail com>]

Hi all,

I have a super annoying issue on Gnome Shell: I connect using my phone's 
3G connection via bluetooth (DUN) but the wifi tries to connect to all 
the access points it finds. This mean that I get the popup dialog asking 
me for the credentials all the time, it is unusable just about. I tired 
switching off the wifi, sometimes that works, others I am no longer able 
to connect to the internet. I think that once there is a connection, the 
wifi should stop trying to connect automatically everywhere, if not the 
user experience is really bad.

Thanks,
Gabriel