Some more info:
I'm using Intelligent updater 5.1.0.9. All machines are 32 bit. Intelligent Updater works on some of my machines that have issues, but many still have old virus definitions after running it. Here is another machine with a similar error:
Mon Apr 11 10:52:11 2011 : CONFIG LOAD SUCCESS: Successfully loaded the configuration file: iuConfig.xml.
Mon Apr 11 10:52:11 2011 : IU INFO: File-name : 20110411-003-v5i32.EXE
Mon Apr 11 10:52:11 2011 : IU INFO: Creation-date : 20110411
Mon Apr 11 10:52:11 2011 : PROCESSING ENTRY: VIRSCAN.zip - Virus Definitions
Mon Apr 11 10:52:11 2011 : Entry details:
Mon Apr 11 10:52:11 2011 : Update-File: VIRSCAN.zip
Mon Apr 11 10:52:11 2011 : Update-Desc: Virus Definitions
Mon Apr 11 10:52:11 2011 : Auth DLL Name: SAVIUAuth
Mon Apr 11 10:52:11 2011 : Auth DLL Location: local
Mon Apr 11 10:52:11 2011 : Auth Content-Type: virus definitions x32
Mon Apr 11 10:52:11 2011 : Deploy Content-Type: virus definitions x32
Mon Apr 11 10:52:11 2011 : Deplo DLL Name: SAVIUDeploy
Mon Apr 11 10:52:11 2011 : Deploy DLL Location: local
Mon Apr 11 10:52:11 2011 : AUTH DLL LOCATION: IU will read the DLL location from registry - SAVIUAuth
Mon Apr 11 10:52:11 2011 : REG SUCCESS: Success while opening key
Mon Apr 11 10:52:11 2011 : REG SUCCESS: Success while fetching the path for DLL : C:\Program Files\Symantec AntiVirus\IU\LuAuth.dll
Mon Apr 11 10:52:11 2011 : DEPLOY DLL LOCATION: IU will read the DLL location from registry - SAVIUDeploy
Mon Apr 11 10:52:11 2011 : REG SUCCESS: Success while opening key
Mon Apr 11 10:52:11 2011 : REG SUCCESS: Success while fetching the path for DLL : C:\Program Files\Symantec AntiVirus\IU\DefUDply.dll
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED BEGIN: Started.
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED CLASS3 BEGIN: Entering CriticalSection Initialization .
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED CLASS3: Succeeded find the class 3 ID, returning TRUE.
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED END: Finished processing. Returns TRUE
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED SUCCESS: Successfully verified Symantec Signature for the authorization dll C:\Program Files\Symantec AntiVirus\IU\LuAuth.dll
Mon Apr 11 10:52:12 2011 : AUTH LOAD SUCCESS: Successfully loaded the authorization dll - C:\Program Files\Symantec AntiVirus\IU\LuAuth.dll
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED BEGIN: Started.
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED CLASS3 BEGIN: Entering CriticalSection Initialization .
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED CLASS3: Succeeded find the class 3 ID, returning TRUE.
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED END: Finished processing. Returns TRUE
Mon Apr 11 10:52:12 2011 : DEPLOY SYMSIGNED SUCCESS: Successfully verified Symantec Signature for the deployment dll C:\Program Files\Symantec AntiVirus\IU\DefUDply.dll
Mon Apr 11 10:52:12 2011 : DEPLOY LOAD SUCCESS: Successfully loaded the deployment dll - C:\Program Files\Symantec AntiVirus\IU\DefUDply.dll
Mon Apr 11 10:52:12 2011 : AUTHORIZATION SUCCESSFUL: VIRSCAN.zip is successfully authorized for deployment.
Mon Apr 11 10:52:12 2011 : DEPLOY PATH SUCCESS: VIRSCAN.zip will be deployed at location C:\PROGRA~1\COMMON~1\SYMANT~1\VIRUSD~1\tmp29ce.tmp
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED BEGIN: Started.
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED CLASS3 BEGIN: Entering CriticalSection Initialization .
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED CLASS3: Succeeded find the class 3 ID, returning TRUE.
Mon Apr 11 10:52:12 2011 : AUTH SYMSIGNED END: Finished processing. Returns TRUE
Mon Apr 11 10:52:12 2011 : UNRAR LOAD SUCCESS: Successfully loaded the UNRAR DLL.
Mon Apr 11 10:52:12 2011 : UNRAR OPEN SUCCESS: Success opening RAR file VIRSCAN.zip
Mon Apr 11 10:52:38 2011 : UNRAR EXTRACT SUCCESS: Succesfully extracted VIRSCAN.zip to C:\PROGRA~1\COMMON~1\SYMANT~1\VIRUSD~1\tmp29ce.tmp