Windows 7 - Automatische Updates schlagen fehl

Hallo Community,

ich habe folgendes Problem:

Auf mehreren Laptops ist Windows 7 Pro 32 Bit installiert, die Geräte besitzen identische Hardware.
Über den Group Policy Editor habe ich die admx Datei für Windows-Update konfiguriert, sodass die Laptops sich automatisch wichtige und optionale
Updates über $MS holen und laut Zeitplan installieren bzw. spätestens beim Herunterfahren des Gerätes.

Leider werden jedoch keine Updates unter anderem auch das SP1 nicht installiert und das seit nun gut 3 Wochen.
Rufe ich die grafische Windows Update Oberfläche auf, sehe ich das Updates und das Service Pack verfügbar sind und von hier aus kann ich auch die Updates
anwählen und installieren, was natürlich nicht Sinn und Zweck der Sache ist.

Die benötigten Dienste (wuauserv & BITS) laufen.

Hier der Registry-Auszug von der Policy:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate]
"ElevateNonAdmins"=dword:00000001  

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU]
"NoAutoUpdate"=dword:00000000  
"AUOptions"=dword:00000004  
"ScheduledInstallDay"=dword:00000000  
"ScheduledInstallTime"=dword:0000000f  
"AutoInstallMinorUpdates"=dword:00000001  
"IncludeRecommendedUpdates"=dword:00000001  
"NoAutoRebootWithLoggedOnUsers"=dword:00000001  
"RescheduleWaitTimeEnabled"=dword:00000001  
"RescheduleWaitTime"=dword:00000005  

Und hier noch der Auszug aus der WindowsUpdate.log

2011-04-01	17:11:02:500	1052	e40	DnldMgr	***********  DnldMgr: Regulation Refresh [Svc: {7971F918-A847-4430-9279-4A52D1EFE18D}]  ***********
2011-04-01	17:11:02:500	1052	e40	DnldMgr	Contacting regulation server for 5 updates.
2011-04-01	17:11:02:515	1052	e40	Misc	Validating signature for C:\Windows\SoftwareDistribution\WuRedir\7971F918-A847-4430-9279-4A52D1EFE18D\wuredir.cab:
2011-04-01	17:11:02:515	1052	e40	Misc	 Microsoft signed: Yes
2011-04-01	17:11:05:292	1052	e40	PT	URL for regulation server found in server config.
2011-04-01	17:11:05:292	1052	e40	DnldMgr	Regulation server path: https://www.update.microsoft.com/v6/UpdateRegulationService/UpdateRegulation.asmx.
2011-04-01	17:11:10:221	1052	e40	DnldMgr	  Per-Update: 6744cf84-80d7-49cc-8701-73aa4eb55857 at rate 100
2011-04-01	17:11:10:221	1052	e40	DnldMgr	  Per-Update: 1f0b5aa2-5f5d-456e-b2bd-ea0146a22206 at rate 0
2011-04-01	17:11:10:221	1052	e40	DnldMgr	  Per-Update: c08d54a3-f858-45e9-92c2-ad8ded8cf2c6 at rate 100
2011-04-01	17:11:10:221	1052	e40	DnldMgr	  Per-Update: 56fa39be-7c4a-4efd-864a-5fcdf8e2bff7 at rate 100
2011-04-01	17:11:10:221	1052	e40	DnldMgr	  Per-Update: ce236ae2-d385-483b-baf4-92dba756b831 at rate 100
2011-04-01	17:11:10:221	1052	e40	DnldMgr	  * Regulation call complete. 0x00000000
2011-04-01	17:11:10:221	1052	e40	DnldMgr	***********  DnldMgr: New download job [UpdateId = {CE236AE2-D385-483B-BAF4-92DBA756B831}.102]  ***********
2011-04-01	17:11:10:221	1052	e40	DnldMgr	Regulation: {7971F918-A847-4430-9279-4A52D1EFE18D} - Update CE236AE2-D385-483B-BAF4-92DBA756B831 is "PerUpdate" regulated and can NOT download. Sequence 7464 vs AcceptRate 100.  
2011-04-01	17:11:10:221	1052	e40	DnldMgr	  * Update is not allowed to download due to regulation.
2011-04-01	17:11:10:221	1052	e40	DnldMgr	***********  DnldMgr: New download job [UpdateId = {C08D54A3-F858-45E9-92C2-AD8DED8CF2C6}.102]  ***********
2011-04-01	17:11:10:221	1052	e40	DnldMgr	Regulation: {7971F918-A847-4430-9279-4A52D1EFE18D} - Update C08D54A3-F858-45E9-92C2-AD8DED8CF2C6 is "PerUpdate" regulated and can NOT download. Sequence 7464 vs AcceptRate 100.  
2011-04-01	17:11:10:221	1052	e40	DnldMgr	  * Update is not allowed to download due to regulation.
2011-04-01	17:11:10:221	1052	e40	DnldMgr	***********  DnldMgr: New download job [UpdateId = {56FA39BE-7C4A-4EFD-864A-5FCDF8E2BFF7}.100]  ***********
2011-04-01	17:11:10:221	1052	e40	DnldMgr	Regulation: {7971F918-A847-4430-9279-4A52D1EFE18D} - Update 56FA39BE-7C4A-4EFD-864A-5FCDF8E2BFF7 is "PerUpdate" regulated and can NOT download. Sequence 7464 vs AcceptRate 100.  
2011-04-01	17:11:10:221	1052	e40	DnldMgr	  * Update is not allowed to download due to regulation.
2011-04-01	17:11:10:221	1052	e40	DnldMgr	***********  DnldMgr: New download job [UpdateId = {6744CF84-80D7-49CC-8701-73AA4EB55857}.102]  ***********
2011-04-01	17:11:10:221	1052	e40	DnldMgr	Regulation: {7971F918-A847-4430-9279-4A52D1EFE18D} - Update 6744CF84-80D7-49CC-8701-73AA4EB55857 is "PerUpdate" regulated and can NOT download. Sequence 7464 vs AcceptRate 100.  
2011-04-01	17:11:10:221	1052	e40	DnldMgr	  * Update is not allowed to download due to regulation.
2011-04-01	17:11:10:221	1052	e40	DnldMgr	Regulation: {7971F918-A847-4430-9279-4A52D1EFE18D} - Update CE236AE2-D385-483B-BAF4-92DBA756B831 is "PerUpdate" regulated and can NOT download. Sequence 7464 vs AcceptRate 100.  
2011-04-01	17:11:10:221	1052	e40	DnldMgr	Regulation: {7971F918-A847-4430-9279-4A52D1EFE18D} - Update C08D54A3-F858-45E9-92C2-AD8DED8CF2C6 is "PerUpdate" regulated and can NOT download. Sequence 7464 vs AcceptRate 100.  
2011-04-01	17:11:10:221	1052	e40	DnldMgr	Regulation: {7971F918-A847-4430-9279-4A52D1EFE18D} - Update 56FA39BE-7C4A-4EFD-864A-5FCDF8E2BFF7 is "PerUpdate" regulated and can NOT download. Sequence 7464 vs AcceptRate 100.  
2011-04-01	17:11:10:221	1052	e40	DnldMgr	Regulation: {7971F918-A847-4430-9279-4A52D1EFE18D} - Update 6744CF84-80D7-49CC-8701-73AA4EB55857 is "PerUpdate" regulated and can NOT download. Sequence 7464 vs AcceptRate 100.  
2011-04-01	17:11:10:221	1052	e40	DnldMgr	Regulation: {7971F918-A847-4430-9279-4A52D1EFE18D} - Update 1F0B5AA2-5F5D-456E-B2BD-EA0146A22206 is "PerUpdate" regulated and can NOT download. Sequence 7464 vs AcceptRate 0.  
2011-04-01	17:11:10:221	1052	e40	DnldMgr	Regulation: {7971F918-A847-4430-9279-4A52D1EFE18D} - Update 1F0B5AA2-5F5D-456E-B2BD-EA0146A22206 is "PerUpdate" regulated and can NOT download. Sequence 7464 vs AcceptRate 0.  
2011-04-01	17:11:10:221	1052	e40	Report	CWERReporter finishing event handling. (00000000)
2011-04-01	17:11:10:237	1052	e40	Report	CWERReporter finishing event handling. (00000000)