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First, this question centers around a home network. Is it okay to ask here? Or should I go to SuperUser? (I see less answers over there, but I'll go there if that would be more appropriate.)

Network setup: 1 Machine running XP Pro 1 Machine running Win7 Ultimate Comcast router Linksys WRT610N Wireless router

The Win7 machine goes into a total, unrecoverable system freeze frequently. I was tearing out my hair trying to ascertain a cause, but I noticed that it usually seems to correspond with performing operations on the shared folders on the XP machine. The last 2 occasions that the Win7 machine froze, I saw this entry for Event ID 8003 from source MrxSmb in the Event log of the XP machine:

The master browser has received a server announcement from the computer WIN7_COMPUTER that believes that it is the master browser for the domain on transport NetBT_Tcpip_{320B32A7-FED9. The master browser is stopping or an election is being forced.

My question is twofold:

  1. Could this cause a Win7 system freeze?
  2. If so, what could I configure differently on my network to stop these conflicts over who is the master browser?
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From my own experience, I doubt the 8003 event is causing the computer to freeze. I do have a couple of suggestions which may fix the issue.

  1. You state that you have both a Comcast router and a Linksys router. Is it possible that one computer may be getting its address from one of the routers versus the other? I would check that either a) you have only one router doing DHCP or b) you have both computers set to static addresses and the same gateway.

  2. I have had Windows 7 explorer windows freeze during file copies to/from older systems but the rest of the system remain functional. Turning off remote differential compression, autotuning, and IPv6 (I wasn't using it anyway) on the Windows 7 system has resolved the issue.

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Thanks! Both machines look to the Linksys for DHCP. I don't know how to check the Comcast one to see if it is trying, but that shouldn't make any difference if no machien is actually listening to it -- right? I will try your other suggestions as well. Thanks again. – lifegoeson Jan 5 '11 at 0:50
Well, I experienced the system freeze twice again this morning, having turned off all of those services. Anyone know of anything else I can investigate? Thanks so much! – lifegoeson Jan 7 '11 at 17:35

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