More issues with the Windows Server 2003 Scalable Networking Pack
In this article, I reported that specific issues in the scalable networking pack (SNP) were corrected by an update to the Broadcomm drivers.
However, it has just recently come to my attention that another severe issue exists with the SNP - during shutdown a machine can hang and require a physical power-cycle to restore operation (a nightmare if you remotely maintain your servers!).
This is documented in KB 940202 and is not corrected by the patch contained in KB 936594.
Again, this is caused by the TCP Chimney Offload feature. Disable it by "Netsh int ip set chimney DISABLED" from a command prompt, as documented in the KB article. This command takes effect immediately and does not require a reboot of the computer.
KB 940202 does not document this as being specifically a Broadcomm driver problem, thus I would suggest you assume at this point it is an overall Windows 2003 sp2 problem and disable the feature.