Hangs
Information about the environment variable DBUS_SESSION_BUS_ADDRESS on Linux which can cause the Health Center to hang.
On some versions of Linux, the Health Center can go into an endless loop when trying to open a file and seem to stop. If you log on to root from a normal user account, use su - instead of su, otherwise you will inherit the DBUS_SESSION_BUS_ADDRESS environment variable from your normal user account. This variable is known to cause problems.