Microsoft has released two new updates for Windows Server 2003:
IPMI server management system fix for Windows Server 2003 R2
Download for Windows Server x64 Edition
Fix for various problems when using an older version of the Storport driver for Windows Server 2003
IPMI server management system fix for Windows Server 2003 R2
Install this update to fix the IPMI server management system on a system with Windows Server 2003 R2 installed. This situation may occur when R2 is installed on a computer that has Advanced Configuration and Power Interface (ACPI) enabled and the system does not recognize the Intelligent Platform Management Interface (IPMI) driver. After you install this item, you may have to restart your computer.Download for Windows Server 2003
Download for Windows Server x64 Edition
Fix for various problems when using an older version of the Storport driver for Windows Server 2003