MrxSmb

My DC is getting the following error every few seconds – any suggestions?

Event Type: Warning
Event Source: MRxSmb
Event Category: None
Event ID: 3034
Date: 6/13/2005
Time: 8:56:14 AM
User: N/A
Computer: ENFORCER
Description:
The redirector was unable to initialize security context or query context attributes.
Data:
0000: 00 00 08 00 02 00 56 00 ……V.
0008: 00 00 00 00 da 0b 00 80 ….?..€
0010: 00 00 00 00 72 00 00 c0 ….r..?
0018: 00 00 00 00 00 00 00 00 ……..
0020: 00 00 00 00 00 00 00 00 ……..
0028: 7d 04 00 00 72 00 00 c0 }…r..?