problem installing softwares using software manager
I am not able to install any package using software manager. I make sure that I remain online throughout the process.
When I select any software package to install, a window appears that asks for the authentication code.
After entering the code, no progress(in any form) takes place and the dialog box remains idle.
The same thing happened when I tried to install cheese, netbeans, gcc, eclipse, build-essential, g++, codeblocks and many other such software packages.
Kindly help me with the possible cause of this problem.
I would like to state that this problem is persisting from past two days. Earlier I was able to install software packages using software manager and I had already installed about 10 software packages before this problem actually came into notice.