Over in bug 1082685 we're renaming and upgrading mac-signing4 to mac-v2-signing4. Any references to mac-signing4 can be erased, and mac-v2-signing4 should look the same as the other mac-v2-signing machines. Thanks!
mac-signing4 removed from nagios. I will get the new hostname names plumbed shortly
I've renamed mac-signing4 to mac-v2-signing4 and uncommented the config. svn revision 94969