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 You are unexpectedly prompted to restart the computer after you install an Office service pack or an Office update
After you install Office 2003 SP3, an add-in, ActiveX control, or COM add-in may not work as expected in an Office 2003 program. For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:
938814 The functionality of an add-in, an ActiveX control, or a COM add-in is reduced, or the functionality is blocked after you install Office 2003 Service Pack 3
After you install Office 2003 SP3, you may receive an error message when you try to create a new MAPI form in Outlook 2003. For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:
938816 Error message when you try to create a new MAPI form in Outlook 2003: "contact the administrator"
After you install Office 2003 SP3, attachments that contain the .gadget extension cannot be opened in Outlook 2003. For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:
938811 Attachments that contain the .gadget extension cannot be opened in Outlook 2003 after you install Office 2003 Service Pack 3
After you install Office 2003 SP3, the Fast Saves feature does not work as expected in Word 2003. For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:
938808 The Fast Saves feature in Word 2003 no longer functions after you install Office 2003 Service Pack 3
After you install Office 2003 SP3, the Microsoft Office Document Imaging program may not work as expected. For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:
938813 You may experience issues when you run the Microsoft Office Document Imaging program after you install Office 2003 Service Pack 3
After you install Office 2003 SP3, you may receive an error message when you try to open or to save a file. For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:
941636 You receive an error message when you try to open a file or to save a file after you install Office 2003 Service Pack 3
After you install Office 2003 SP3, you cannot open some Microsoft Excel workbooks that contain Microsoft Visual Basic for Applications (VBA) macros. For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:
938806 You cannot open Microsoft Excel 5.0/95 Workbook files that contain Visual Basic for Applications macros in Excel 2003 after you install Office 2003 Service Pack 3
After you install Office 2003 SP3, the version number of Office is no longer saved in the properties of the document as expected. For more information about this issue, click the following article number to view the article in the Microsoft Knowledge Base:
938807 Office files that are saved in certain formats no longer contain the version number of Office after you install Office 2003 Service Pack 3
Source : Description of Office 2003 Service Pack 3 (kb923618)
