SharePoint Portal Server 2003 SP3も公開されています。
ってことで、予期せず再起動が表示されるらしいです。
After you install a Microsoft Office service pack, you are prompted unexpectedly to restart the computer. For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:
905726 (http://support.microsoft.com/kb/905726/) You are unexpectedly prompted to restart the computer after you install an Office service pack or an Office update
