In http://support.microsoft.com/kb/942861 Microsoft reports that in some situations Microsoft SQL Server experiences network issues due to the network card having a TCP Chimney Offload turned on. I have other server software that is experiencing similar issues. The result is that same as with SQL Server, turn off the TCP Chimney Offload and everything goes back to normal.
What does this TCP Chimney Offload feature do? What does it prevent certain network packets from reaching the final application?