Sounds like your display or GPU is failing? Back up any data you deem important and book an appointment at your nearest Apple Store or Apple Authorised Repair Centre asap. I would also get rid of mackeeper (and anything else that purports to do the same) plus whatever you've used to 'defrag' your mac. They ar no use to you at all and in reality most 'helper' applications just create problems as well as slowing your mac down.
Now what question do you have regarding OS X Lion Server?