Question: I am new to Ubuntu, and I have just installed Ubuntu 12.04 on a computer. I am using an automatic proxy server. When I select a software package to install and input my password, the progress icon displays for a few seconds, and then it stops. I tried to install different programs, and I always had the same problem. I can browse the web with Firefox, so I know I have a network connection. I do not see any errors or anything. What should I do?

Answer: 
Here is a work around. Once you find a game you want to install, you can search for it in the terminal with (for example \*\* Super Tux):

```
apt-cache search Super Tux

```

Then you can install one of the names it displays by for example:

```
sudo apt-get install supertux

```

If you want to install a game from *dotdeb.com* for instance, you can open the terminal and type:

```
sudo dpkg -i 

```

Make sure to leave a `Space` **after** the `-i` and then drag-and-drop the deb file you downloaded onto the terminal and press `Enter`.
I had the same problem with software. It's probably a permission thing. 

On my menu the command to open uses software-center with pkexec, which command without parameters defaults to superuser. It seems to have issues.

By altermint the menu command to gksu software-center I found it worked and installed programs with no problems.