SymEFA event question

Using NAV11 on Win XP..  I'm having no problems, but I occasionally check the Windows XP events logs just to see what is going on with my machine.  I've noticed that frequently at bootup there is a an event 1004 in the Windows System Events Log concerning SymEFA.  This occurs VERY early in the boot sequence, and does not matter if I have boot protection set to "normal" or "aggressive."  Here is the message that I see in the Windows Event Log:

 

"The description for Event ID (1004) in Source (SymEFA) cannot be found.  The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer.  You may be able to use the /AUXSOURCE=flag to retrieve this description; see Help and Support for details.  The following information is part of the event:  \Device\Harddisk\Volume1."

 

Again, there doesn't seem to be any problem with bootup or function of the NAV.  So I just found those messages by accident.  Can anyone tell me what is going on, and if there is any significance?  Thanks in advance for comments.