When the Preferences.systemNodeForPackage static method is called, it
starts a thread that attempts to flush system preferences every
30 seconds, even if the user is not root. This results in WARNING
messages being generated every 30 seconds because it cannot lock
the Java system preferences file (due to Unix permissions):

"WARNING: Could not lock System prefs.Unix error code 0.
Oct 15, 2004 3:24:04 PM java.util.prefs.FileSystemPreferences syncWorld
WARNING: Couldn't flush system prefs: java.util.prefs.BackingStoreException:
Couldn't get file lock.

This makes the application unusable for any user other than root.
The application should be able to READ system preferences when run
as any user, without generating errors!
###@###.### 10/15/04 21:03 GMT