List of print related hotfixes post Service Pack 1 for Windows Server 2008 as of Sept. 1 2009:

1) 972026 Some print jobs fail together with the Event 6161 when the "Print to File" option is used on a multiprocessor computer that is running Windows Server 2008 or Windows Vista and that is under heavy stress
http://support.microsoft.com/?id=972026
Replaces 971069, 968585, 962000 and 955806, 955560
Updates Localspl.dll  6.0.6001.22454

2) 967159 Many events that have a Source attribute of
Microsoft-Windows-SpoolerWin32SPL and an event ID of 4 are logged in Windows Vista
SP1 and in Windows Server 2008
http://support.microsoft.com/?id=967159
Replaces 959203, 958741, 958656, 955560, 950087
Updates Printcom.dll
Win32spl.dll

3) 960594 Per-machine printer connections that are deployed by using group policies
may not be removed completely from Windows Server 2008 and Windows Vista SP1-based
computers
http://support.microsoft.com/?id=960594
Replaces 951638
Updates Spoolss.dll
prnext.dll

4) 958894 The Printer Spooler service may encounter an access violation and crash
when the service handles asynchronous notifications from print clients on Windows
Server 2008-based or Windows Vista Service Pack 1-based computers
http://support.microsoft.com/?id=958894
Updates Spoolsv.exe

5) 956807 The Unicode hyphen character (U+2010) is not drawn when you use an application that uses GDI+ API functions in Windows Server 2008, in Windows Vista, in Windows Server 2003, and in Windows XP
Replaces 951759
http://support.microsoft.com/?id=956807
Updates Gdiplus.dll  6.0.6001.22259

6) 967227 An application may stop working unexpectedly on a Windows Vista SP1-based
or a Windows Server 2008-based computer
http://support.microsoft.com/?id=967227
Replaces 952178
Updates Rpcrt4.dll

7) 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
Atmlib.dll
Dciman32.dll
Fontsub.dll
Lpk.dll

8) 954051 It takes longer than expected to print a graphics-intensive document by
using an XPS printer on a computer that is running Windows Vista Service Pack 1 or
Windows Server 2008
http://support.microsoft.com/?id=954051
Updates
Printfilterpipelineprxy.dll
Printfilterpipelinesvc.exe
Printfilterpipelinesvc.mof

9) 967758 You experience a delay during startup on a computer that is running
Windows Vista or Windows Server 2008 when the computer has certain devices
connected
http://support.microsoft.com/?id=967758
Replaces 961980, 959482, 955044, 954436
Updates Win32k.sys

10) 969744 Underlines are missing when you print a document on a computer that runs
Windows Vista, Windows Server 2008, or Windows XP Service Pack 3
http://support.microsoft.com/?id=969744
Replaces 967667, 957187, 948696
Updates Unidrv.dll

11) 962998 Error message when you try to export printers to a file on a Windows
Server 2008-based cluster node: "Windows encountered errors during the migration
process"
http://support.microsoft.com/?id=962998
Updates Printbrm.exe, Printbrmengine.exe, Printbrmps.dll, Printbrmui.exe


12) 955554 DLL files may not be registered by the RegisterDlls directive in a printer driver for a Windows Vista Service Pack 1-based or Windows Server 2008-based computer
http://support.microsoft.com/?id=955554
Updates Ntprint.dll  6.0.6001.22261 
Ntprint.exe  6.0.6001.22261 

13) 957389 When you run an SUA application that prints log messages from the system logger daemon, ISO 8859 characters are printed incorrectly on Windows Server 2003 R2-based, Windows Vista-based, and Windows Server 2008-based computers
http://support.microsoft.com/?id=957389
Updates Syslogd  9.0.3790.4368

14) 958910 When you send a print job to an Internet Printer Protocol (IPP) print server from a Windows-based computer, the print job fails and never restarts
http://support.microsoft.com/?id=958910
Updates Inetpp.dll  6.0.6001.22314 
Inetppui.dll  6.0.6001.22314
Wpnpinst.exe  6.0.6001.22314 

15) 959442 The edges of a document are truncated when you try to print the document by using Terminal Services Easy Print from a client computer that is running Windows XP SP3, Windows Vista SP1, or Windows Server 2008
http://support.microsoft.com/?id=959442
Updates Aaclient.dll  6.0.6001.22303
Mstscax.dll  6.0.6001.22303 
Tsgqec.dll  6.0.6001.22303

16) 959886 Error reports are printed when you print an image to a PostScript printer from a computer that is running Windows Vista or Windows Server 2008
http://support.microsoft.com/?id=959886
Updates Icm32.dll  6.0.6001.22329
Mscms.dll  6.0.6001.22329
Wcspluginservice.dll  6.0.6001.22329 

17) 967113 Per-machine printer connections that are removed are still displayed in the GPO report about a print client computer that is running Windows Server 2008 or Windows Vista
http://support.microsoft.com/?id=967113
Updates Microsoft.grouppolicy.serveradmintools.reporting.dll  6.0.6001.22428
Microsoft.grouppolicy.reporting.dll  6.0.6001.22428
Gpprnext.dll  6.0.6001.22428

18) 970013 The "Active Directory Users and Computers" MMC window crashes when you try to find any object in Windows Server 2008 and Windows Vista systems
http://support.microsoft.com/?id=970013
Updates Printui.dll  6.0.6001.22423

19) 970603 The content of a printout is different when you print a PDF document by using Terminal Services Easy Print in a Terminal Services (TS) session in Windows Vista or Windows Server 2008
Replaces 959554
http://support.microsoft.com/?id=970603
Updates Gdi32.dll  6.0.6001.22428

20) 971059 You cannot enter the FQDN of all printer servers into the "Point and Print Restrictions" policy in Windows Server 2008 or in Windows Vista
http://support.microsoft.com/?id=971059
Updates Printing.admx

21) 972600 After you disconnect from a remote desktop session to a destination computer that is running Windows Vista or Windows Server 2008, the default printer is changed when you log on the destination computer from the console
http://support.microsoft.com/?id=972600
Updates Umrdp.dll  6.0.6001.22467 
Rdpclip.exe  6.0.6001.22467

22) 972616 You cannot use the "runas" command to print from different user accounts in a single session from a 32-bit program on a computer that is running 64-bit version of Windows Server 2008 or Windows Vista
http://support.microsoft.com/?id=972616
Updates Splwow64.exe  6.0.6001.22464 

23) This one goes on the Vista/W2K8 clients using GPP printing:
-----------------------------------------------------
973772 Group Policy Preferences stops responding when you try to configure the printer item for printers that use third-party drivers on a Windows Vista or Windows Server 2008-based computer
http://support.microsoft.com/?id=973772
Updates Winspool.drv  6.0.6001.22474 

24) This one goes on the XP/Vista/W2K3 clients using GPP printing:
-----------------------------------------------------
974266 Group Policy Preferences Client-Side Extension Hotfix Rollup
http://support.microsoft.com/?id=974266