A Scalable Networking Pack (SNP) hotfix rollup package is available for Windows Server 2003
Install this update to resolve some reliability issues with Scalable Networking Pack (SNP) on systems that are running Windows Server 2003. After you install this item, you may have to restart your computer.
Download it here (x64): http://www.microsoft.com/downloads/details.aspx?FamilyId=FEB6F957-8A3E-4D89-B31F-DD61EEDA2F05 and 32bits http://www.microsoft.com/downloads/details.aspx?FamilyId=F5D41696-A83D-47CF-A06F-1BF708F6B567
Cheers,
Anderson Patricio