I installed Linux Mint theme following some instructions in this webpage.
It works but software center stop working.I corrected the problem of software center but now the setting button in Update manager stop working. when i press setting in update manager it checks for update.How do i correct this?
I got the following error when I do sudo apt-get update.
Err http://ppa.launchpad.net oneiric/main Sources E: Some index files failed to download. They have been ignored, or old ones used instead.