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Recently, I've noticed that my network connection often becomes unusable when doing an online update in Quicken 2010. When I say unusable, I mean my web browser stops working, pinging both local and internet hosts fails, etc, almost as if my network cable had been yanked. It seems that updating only one account doesn't trigger the behavior, just trying to update all accounts at once.

I've not been smart enough to note if this has been happening since I moved to Quicken 2010, but I'm sure it didn't happen with Quicken 2008, my previous version. I've seen some complaints on Quicken's website about QuickBooks 2010 having similar problems, but the solutions seem to involve changing QuickBooks settings which don't exist in Quicken, as far as I can tell.

I'm on a wired network. Running AVG 9, built-in Windows firewall. The OS is XP SP3.


I have noticed a similar symptom that network drives sometimes disconnect whenever there is heavy processing that causes the system to freeze for a moment. I get a notification bubble informing me that "DOMAIN is not available", and have to wait a minute or two before I can reconnect.

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For what it's worth, I believe I have an idea as to what is going on. It seems that Windows has often been logging the System event log event ID 4226,

TCP/IP has reached the security limit imposed on the number of concurrent TCP connect attempts.

This may be related to the fact that I am seeding some (legitimate) torrents and sharing the same files out over eMule. I think when the P2P apps get active, Windows sometimes has problems making connections to my file servers.

I've not conclusively proven this yet, but the errors in the event log seem to match the times of the problem.

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