Project 2003 Service Pack 1 contains significant security enhancements.
Project 2003 Service Pack 1 contains significant security enhancements, in addition to stability and performance improvements.
Project 2003 Service Pack 1 provides the latest updates to Microsoft® Office Project 2003. Some of the fixes included with Service Pack 1 (SP1) have been previously released as separate updates. This service pack combines them into one update.