Purpose: You have installed SCCM SP1, but its not up to date anymore, Aieee! Do something again!
So you thought you are safe now that the SP1 is installed and all your worries will go away? Wrong! SP1 created some new issues and did not fix all the original issues you might have had with the system. So I urge you to update SCCM 2012 SP1 to the following Comulative Update 1, which will help you to grow less grey hair. With all these different issues, there will most likely be updates more in the future, but do not wait for SP2 to appear, it could take a while.
Bug fixes in Configuration Manager 2012 SP1 CU1 (Includes download link)
Purpose: You installed RTM version, and its now not up to date anymore, Aieee! Do something!
Let me begin by pointing out the obvious here: you do not need this update because of all the new features it gives, you need this update because of all the bug fixes it does! My god, that almost rhymed, I could start writing poetry. The post is divided into two parts: the first part containing the requirements that you need to do before you can move to the second part, which is the actual installation of the update. Do not step over the first part, you really do need to do all of these.
Bug fixes in Configuration Manager 2012 SP1
New features in Configuration Manager 2012 SP1 (Referenced)