LMREPL.EXE is "hogging" 100% CPU time all of a sudden.

I am running Windows NT Server on my PDC and BDC, I had my BDC start bogging down a couple weeks ago, and noticed LMREPL.EXE was occupying 100% CPU time, I rebooted thinking it just was hung or something, then after about 15 minutes it started doing it again.  My question is 2 fold, first, why would it all of a sudden start doing this, and second, how do I get it to stop.  The BDC also acts as the Symantec Antivurs server, which had just been updated to Corporate Edition 9.0, which I suspect may be part of the problem?  I am fairly new to the IT world, so any help with this would be greatly appreciated, thanks in advance.
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This is the replication service between the two domain controllers. Maybe something isn't replicating properly. Can you check the eventlogs on the servers for errormessages?

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