I am using Ubuntu 12.04 (didn't really want to, was perfectly happy on 10.10, but got tired of the constant warning that my distribution was no longer supported). After a recent install of updates the wifi icon on the top tool bar is missing. I need it back because Ubuntu keeps connecting to the wrong network and I cannot change it.
Rather than installing
Or from the Terminal:
That is, of course, assuming that the problem is that
Well, first you need to install Synaptic package manager. Run
After installing, open it and type