We have been having issues trying to install this update. After the initial SharePoint Configuration Wizard failed, after running the steps of KB939308, we still get the following errors upgrading the farm:
PS C:\> psconfig -cmd upgrade -inplace b2b -force -wait
SharePoint Products Configuration Wizard version 14.0.4762.1000. Copyright (C) Microsoft Corporation 2010. All rights reserved.
Performing configuration task 1 of 4
Initializing SharePoint Products upgrade...
Waiting to get a lock to upgrade the farm.
Successfully initialized SharePoint Products upgrade.
Performing configuration task 2 of 4
Initiating the upgrade sequence...
Successfully initiated the upgrade sequence.
Performing configuration task 3 of 4
Upgrading SharePoint Products...
Failed to upgrade SharePoint Products.
An exception of type Microsoft.SharePoint.Administration.SPUpdatedConcurrencyException was thrown. Additional exception information: An update conflict has occurred, and you must re-try this action. The object SPUpgradeSession Name=Upgrade-20110309-141850-321 was updated by DOMAIN\user, in the PSCONFIG (3156) process, on machine MACHINENAME. View the tracing log for more information about the conflict.
Total number of configuration settings run: 3
Total number of successful configuration settings: 2
Total number of unsuccessful configuration settings: 1
Successfully stopped the configuration of SharePoint Products.
Configuration of SharePoint Products failed. Configuration must be performed before you use SharePoint Products. For further details, see the diagnostic log located at C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\LOGS\PSCDiagnostics_3_9_2011_14_18_42_272_416955813.log and the application event log.
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