Evening everyone. I finally gave up with 12.04 LTS. Unfortunately it wasn't for me. Ran slower than a crusty laptop on windoze xp. Seems as though the unity interface may still not be ready for prime time. Decided to give up after the last scheduled updates had some strange effect on of all things mouse performance.
Anyhoooo long story short after doing the down/upgrade I went to update all the software sources. Both sudo apt-get update and an update in the software center failed. With sources not found? Have they been removed? Is there anyway I can get access to them or are they gone for good?