Applies to:
Windows Server 2008 Service Pack 2
Windows Server 2008 SP2
W2K8 Service Pack 2
W2K8 SP2

Note:  You should check http://support.microsoft.com for the latest version of the different files.

List of Failover Cluster related hotfixes post SP2 for Windows Server 2008 (R1) SP2 as of Sep. 2013:

Original post:  Apr. 2011.
Updated Sep. 2012 and Sep. 2013.

2782761 Hotfix enables a dump file to be generated when the Rhs.exe process detects a deadlock condition in Windows Server 2008
http://support.microsoft.com/?id=2782761

Update(s): 
Rhs.exe  6.0.6002.22984

2727976 Cluster disk resource remains offline when a two-node failover cluster is running Windows Server 2008
http://support.microsoft.com/?id=2782761

Update(s):
Clussvc.exe  6.0.6002.22920  
Cluswmi.dll  6.0.6002.22920  
Cluswmi.mof   
Cluswmiuninstall.mof 

Supersede(s):
2710487 Error 1359 and the Cluster service stops in a Windows Server 2008 or Windows Server 2008 R2 Failover Cluster environment
2626689 "ERROR_OBJECT_ALREADY_EXISTS(5010)" error message occurs and clustered generic services cannot start if a Windows Server 2008-based cluster is reformed
2616514 Cluster service sends unnecessary registry key change notifications among cluster nodes in Windows Server 2008 or in Windows Server 2008 R2
2550894 Cluster service leaks memory when the service handles state change notifications in Windows Server 2008 R2 or Windows Server 2008
2496034 Cluster service stops when an error occurs in the registry replication process of a failover cluster in Windows Server 2008 R2 or in Windows Server 2008
2494162 The Cluster service stops unexpectedly on a Windows Server 2008 R2 failover cluster node when you perform multiple backup operations in parallel on a cluster shared volume
982636 Failback does not occur within the set time period in a Windows Server 2008-based failover cluster
982354 A "WBEM_E_INCOMPLETE_CLASS" WMI error occurs or Wmiprvse.exe crashes when concurrent WMI queries are sent to the cluster resources in Windows Server 2008
980253 The Cluster service stops responding in Windows Server 2008 if you run some backup applications in parallel
978790 The File Share Witness resource is in a failed state even though the File Share Witness directory is available, and quorum cannot be maintained in a Windows Server 2008 failover cluster
978001 Cluster resources do not automatically fail over to another node when you disconnect the private and public network interfaces in a Windows Server 2008 failover cluster or in a Windows Server 2008 R2 failover cluster
977837 FIX: A cluster resource remains offline after the "Run this resource in a separate Resource Monitor" option is disabled in Windows Server 2008
975486 The Cluster services fail on all nodes after you shut down the cluster node that owns the quorum disk resource in Windows Server 2008 SP2

2706774 Cluster nodes stop responding in a Windows Server 2008 environment
http://support.microsoft.com/?id=2706774

Update(s):
Volsnap.sys  6.0.6002.22850

2685891 CAP does not come online in a Windows Server 2008 R2-based or Windows Server 2008-based failover cluster
http://support.microsoft.com/?id=2685891

Update(s):
Clusres.dll  6.0.6002.23183
Supersede(s):
2637162 The Rhs.exe process stops unexpectedly when a physical disk resource is moved or fails over in Windows Server 2008 or in Windows Server 2008 R2
2578103 The Cluster service takes about 30 seconds to fail over IPv6 IP addresses in Windows Server 2008
983229 SQL Server Agent resource cannot be brought online in a Windows Server 2008-based failover cluster
982549 Authentication requests between nodes in the same cluster may be unable to use the Kerberos protocol if the Negotiate SSP is specified
973763 The failover operation takes a long time to fail over a shared disk resource that is located on a cluster node of a Windows Server 2008-based failover cluster if many snapshots are saved on the shared disk
970529 The volume GUID may unexpectedly change after a volume is extended on a Windows Server 2008 failover cluster node

2706774 Cluster nodes stop responding in a Windows Server 2008 environment
http://support.microsoft.com/?id=2706774

Update(s):
Volsnap.sys  6.0.6002.22850 
Supersede(s):
973763 The failover operation takes a long time to fail over a shared disk resource that is located on a cluster node of a Windows Server 2008-based failover cluster if many snapshots are saved on the shared disk

2684537 Performance counter instance for the Distributed Transaction Coordinator performance object does not function as expected in Windows Server 2008
http://support.microsoft.com/?id=2684537

Update(s):
Mtxclu.dll  2001.12.6932.22813
Msdtcprx.dll  2001.12.6932.22813
Xolehlp.dll  2001.12.6932.22813
Msdtcuiu.dll  2001.12.6932.22813
Msdtctm.dll  2001.12.6932.22813 

2582281 Slow failover operation if no router exists between the cluster and an application server
http://support.microsoft.com/?id=2582281

Update(s):
Tcpipreg.sys  6.0.6002.22722
Tcpip.sys  6.0.6002.22722 

2495295 A VSS backup operation may fail in a Windows Server 2008-based failover cluster
http://support.microsoft.com/?id=2495295

Update(s):
Agp440.sys  6.0.6002.22570
Amdagp.sys  6.0.6002.22570
Isapnp.sys  6.0.6002.22570
Msisadrv.sys  6.0.6002.22570
Mssmbios.sys  6.0.6002.22570
Nv_agp.sys  6.0.6002.22570
Pci.sys  6.0.6002.22570
Rdpdr.sys  6.0.6002.22570
Sisagp.sys  6.0.6002.22570
Streamci.dll  6.0.6002.22570
Swenum.sys  6.0.6002.22570
Termdd.sys  6.0.6002.22570
Uliagpkx.sys  6.0.6002.22570
Viaagp.sys  6.0.6002.22570
Volmgr.sys  6.0.6002.22570

2494036 A hotfix is available to let you configure a cluster node that does not have quorum votes in Windows Server 2008 and in Windows Server 2008 R2
http://support.microsoft.com/?id=2494036

Update(s):
Failoverclusters.objectmodel.resources.dll  6.0.6002.22612  
Failoverclusters.objectmodel.dll  6.0.6002.22612
Failoverclusters.snapin.resources.dll  6.0.6002.22612
Failoverclusters.snapin.dll  6.0.6002.22612
Clussvc.exe  6.0.6002.22612
Cluswmi.dll  6.0.6002.22612
Cluswmi.mof
Cluswmiuninstall.mof
Clusapi.dll  6.0.6002.22612 
Resutils.dll  6.0.6002.22612
Supersede(s):
978821 "The action 'Show Dependency Report' did not complete. " error message when you generate a dependency report in Windows Server 2008 Failover Clustering
968936 A rollup hotfix package for Windows Server 2008 Failover Clustering WMI provider

2163398 A memory leak occurs in the Rhs.exe process when you configure IIS 7.0 World Wide Web Publishing Service in a Windows Server 2008 failover cluster
http://support.microsoft.com/?id=2163398

Update(s):
Admwprox.dll  7.0.6002.22436 
Ahadmin.dll  7.0.6002.22436
Appcmd.exe  7.0.6002.22436
Appcmd.xml
Applicationhost.config
Appobj.dll  7.0.6002.22436
Aspnetca.exe  7.0.6002.22436
Aspnet_schema.xml
Fx_schema.xml
Iismig.dll  7.0.6002.22436
Iisreg.dll  7.0.6002.22436
Iisres.dll  7.0.6002.22436
Iisreset.exe  7.0.6002.22436
Iisrstap.dll  7.0.6002.22436
Iisrstas.exe  7.0.6002.22436
Iisrtl.dll  7.0.6002.22436
Iissetup.exe  7.0.6002.22436
Iissyspr.dll  7.0.6002.22436
Iisutil.dll  7.0.6002.22436
Iis_schema.xml
Nativerd.dll  7.0.6002.22436
Redirection.config
Rsca.dll  7.0.6002.22436
Rscaext.dll
Rscaext.xml
W3ctrlps.dll  7.0.6002.22436
Wamregps.dll  7.0.6002.22436 

2028815 "0x00000050" Stop error message occurs when you use multiple volume managers in Windows Server 2008 or in Windows Server 2008 R2
http://support.microsoft.com/?id=2028815

Update(s):
Partmgr.sys  6.0.6002.22405 

983174 "Found duplicate physical address" cluster validation wizard error occurs when multiple virtual network adapters are configured to share one MAC address in Windows Server 2008
http://support.microsoft.com/?id=983174

Update(s):
Failoverclusters.agent.interop.dll  6.0.6002.22404 
Failoverclusters.validation.common.dll  6.0.6002.22404 
Failoverclusters.validation.generaltests.dll  6.0.6002.22404
Failoverclusters.validation.storagetests.dll  6.0.6002.22404
Failoverclusters.validation.wizard.dll  6.0.6002.22404

980382 The computer stops responding when you rename a folder in Windows Server 2008, in Windows Vista, in Windows 7 and in Windows Server 2008 R2
http://support.microsoft.com/?id=980382

Update(s):
Ntfs.sys 6.0.6002.22486

977432 Double-byte character set (DBCS) characters are not written to the cluster log on a computer that is running a localized version of Windows Server 2008
http://support.microsoft.com/?id=977432

Update(s):
Cprepsrv.exe 6.0.6002.22267

Supersede(s):
975665 The time stamps in the Cluster log are less accurate compared to the system time that is used for events on a failover cluster node that is running a non-English version of Windows Server 2008

977263 Files print in an incorrect order when the collate option is selected, or you receive an error message when you use custom forms: "Faulting application spoolsv.exe"
http://support.microsoft.com/?id=977263

Update(s):
Localspl.dll 6.0.6002.22303

977153 Error message: When you unmount volumes, delete snapshots or try to fail over disks on which snapshots are saved: "0x00000D6 DRIVER_PAGE_FAULT_BEYOND_END_OF_ALLOCATION"
http://support.microsoft.com/?id=977153

Update(s):
Mountmgr.sys 6.0.6002.22263
Msmmsp.dll 6.0.6002.22263

976438 FIX: Error "0xc00e0003" is returned when you send messages between instances of Message Queuing 4.0 that are running on a Windows Server 2008-based computer
http://support.microsoft.com/?id=976438

Update(s):
Too many to list

976097 Hotfix to add support for asymmetric storages to the Failover Cluster Management MMC snap-in for a failover cluster that is running Windows Server 2008 or Windows Server 2008 R2
http://support.microsoft.com/?id=976097

Update(s):
Too many to list

975832 You cannot perform certain disk-related operations after a VSS hardware provider fails to create a snapshot on a computer that is running Windows Server 2008 or Windows Vista
http://support.microsoft.com/?id=975832

Update(s):
Vssvc.exe 6.0.6002.22230

975512 Some SMB clients cannot access cluster file shares but they can access non-cluster file shares that are located on a computer that is running Windows Server 2008 or Windows Server 2008 R2
http://support.microsoft.com/?id=975512

Update(s):
Srv.sys 6.0.6002.22229

973553 An Automated System Recovery backup of the system state fails on a Windows Server 2008 failover cluster node if the database of an application is saved on a shared disk
http://support.microsoft.com/?id=973553

Update(s):
Eventcls.dll 6.0.6002.22171
Vssapi.dll 6.0.6002.22171
Vsstrace.dll 6.0.6002.22171
Vssvc.exe 6.0.6002.22171

973279 Remote path variables are modified incorrectly in the File Server Resource Manager if the File Server Resource Manager is used in an environment that has a Windows Server 2008 cluster
http://support.microsoft.com/?id=973279

Update(s):
Srmsvc.dll 6.0.6002.22165

972797 Event ID 1038 is logged when a failover occurs on a back-end disk controller in a Windows Server 2008 failover cluster
http://support.microsoft.com/?id=972797

Update(s):
Msdsm.sys 6.0.6002.22207

971403 The "Win32_share" WMI class cannot enumerate file shares or create file shares on a node in a Windows Server 2008 failover cluster
http://support.microsoft.com/?id=971403

Update(s):
Too many to list

971365 You cannot assign a LUN device that is larger than or equal to 2 terabytes to a Failover Cluster by using the "Share and Storage Management" MMC snap-in window
http://support.microsoft.com/?id=971365

Update(s):
Dfsobjectmodel.dll 6.0.6002.22148

970525 Cluster resources fail over before the time expires in the PDORemovePeriod parameter in Windows Server 2008
http://support.microsoft.com/?id=970525

Update(s):
Mpio.inf
Mpio.sys 6.0.6002.22151

970067 You find high CPU usage for the Wmiprvse.exe process on a terminal server that is running Windows Server 2008 when you run the Windows System Resource Manager
http://support.microsoft.com/?id=970067

Update(s):
Wsrm.exe 6.0.6002.22152