Microsoft published a very useful article on how we can fine-tune Hyper-V Replica if we face performance problems. I suggest if to try changing these registry keys only if you face some performance problems. If everything is working smoothly better not touch them. The article is located here.
Microsoft released a very helpful article on how you can remove connectors from SCOM 2007 R2. Actually to do that they provided a PowerShell script. The knowledge base article is located here.
If you see such issue in your SCOM 2007 or 2012 environment you just have to install hotfix on the operating’s systems with this problem. Find out which hotfix on Microsoft knowledge base article KB974051.
This knowledge base article offers explanation to the issue.
Find the cause and the solution of the problem here.