I'm new to Ubuntu, it looks like it is better than Windows. Last day I tried to install Kget (the download manager) but during the process my computer suddenly stopped working. So I had to switch it off. After I logged into Ubuntu again I can't install any program. The Ubuntu Software Center says:
Items cannot be installed or removed until package catalog is repaired. Do you want to repair it now?
After I clicked repair it says (after few seconds):
Package operation fails - The installation or removal of a software package failed
I've tried several times, but the same problem occurred. Can anyone tell me a solution for this problem?