Acciently added the 10.5.7 combo updater and it worked.

A few days ago I added the 10.5.7 Server update to my build and just now noticed it. I was going through the folders and say that I put the server combo updater in there. That would explain why the Desktop picture changed. About this mac says that it is Mac OS X Server Version 10.5.7. I just thought that it was funny that it worked.