Administrators running Mac OS X 10.5 Server have found that since the recent update they have had boot loops and blue screen that requires a hard reset of the hardware, similar to those experienced since the update to the client version of the OS. Because of this, if you are running the server version and are interested in updating, we recommend you only do this when you have physical access to the computer. The hard reset seems to clear the restart hangs, and the OS will update properly afterward.
