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
http://support.microsoft.com/?id=952206
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
http://support.microsoft.com/?id=929134
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
http://support.microsoft.com/?id=953546
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
XP
http://support.microsoft.com/?id=906688
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
http://support.microsoft.com/?id=916094
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
http://support.microsoft.com/?id=906752
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
http://support.microsoft.com/?id=944203
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
http://support.microsoft.com/?id=961118
Updates Ntprint.cat

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
http://support.microsoft.com/?id=952909
Updates Atmfd.dll  5.1.2.227

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
http://support.microsoft.com/?id=904563
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
http://support.microsoft.com/?id=941880
Updates Win32k.sys  5.1.2600.3543