WICD is worth a try, I've found it far better than the default wireless tool.
Can often sort out wireless issues just by changing over to WICD.
https://launchpad.net/wicd
Askubuntu well worth a look, also Omgubuntu
Ubuntu forum full of bellends.
Xubuntu far better than regular Ubuntu, Synaptic Package Manager much better than default software centre imo, maybe I'm just an old phart stuck in a timewarp.
sudo apt-get install synaptic