Whenever you have a problem like the DCOP or your mouse or anything, shut down your computer and remove the battery. This is a reset that fixes everything instantly without having to alter your files. I had the mouse problem once, the mouse just was non responsive, so I removed the battery and that cleared that up. Then when the DCOP server error happened to my wireless....I did the same thing, and all the other former wireless connections that filled the wireless box were gone except mine and it connected instantly.

Try it before you do anything extreme....remove the battery and wait for 10 sec. and put it back...turn it all on. DONE!

Let me know if this helps anyone.