List of print related hotfixes post Service Pack 2 for Windows XP as of Sept. 21, 2009:

952206 A printer-driver upgrade operation fails on printer clients that are running
Windows Server 2003 or Windows XP when multiple printer queues are upgraded at the
same time
Supersedes 905519, 893225, 891647, 884897, 873396
Localspl.dll  5.1.2600.3374

929134 A print queue's Properties dialog box may take 40 to 60 seconds to open in Windows XP with Service Pack 2 and in Windows Server 2003 with Service Pack 1
Supersedes 929134, 917777, 909987
Updates Spoolss.dll

953546 The Print Spooler process (Spoolsv.exe) crashes while it is copying print
driver files on a computer that is running Windows Server 2003 or Windows XP
Supersedes 929134, 924078, 917777, 913478
Updates Win32spl.dll  5.1.2600.3380 

906688 An additional page that contains error text may be printed when you print an
Office 2000 document to a PostScript printer in Windows Server 2003 or in Windows
Supersedes 870981
Updates Ps5ui.dll, Pscript5.dll

916094 A print request to a Novell NetWare printer share is unsuccessful on a
Windows XP Service Pack 2-based computer
Updates Pjlmon.dll

906752 You cannot install a printer that uses a custom print processor in Windows
Server 2003 Server or in Windows XP Professional
Updates Ntprint.dll

944203 You may be unable to print a job after you install the .NET Framework 3.0 or
the XML Paper Specification Essentials Pack on a Windows XP SP2-based computer or
on a Windows Server 2003-based computer
Supersedes 914929, 870981
Updates Unidrv.dll, Unidrvui.dll

961118 All the PCL inbox printer drivers become unsigned after you install the
Microsoft .NET Framework 3.5 Service Pack 1

952909 When you try to print a document to a PostScript printer in an application, the application exits unexpectedly, or you find that an invalid PDF file is created from the incorrect data in the PostScript file
Updates Atmfd.dll

904563 You cannot print an EMF file that is larger than 2 GB in Windows XP and Windows Server 2003
The latest version is in 922859 Some complex Chinese characters appear as rectangles when you print from a Microsoft Office application and from Notepad on a Windows XP-based computer
Updates Gdi32.dll  5.1.2600.2886

941880 Japanese characters appear as boxes when you use a Windows XP Service Pack 2-based printer server to print the characters
Superceeds 924961, 922859, 884897.
The latest version is in 969433 Performance decreases when users log on to and log off from a Windows XP SP2-based computer by using a terminal server session
Updates Win32k.sys  5.1.2600.3543