Vista 32 random freezes, failed-securiy options after black screen

Windows Vista 32bit.
Sig rig.
Freezes for about 5 minutes, black screen says failed -security options, screen comes back, repeat. Have to reboot.
Zune app says I/O error when it happens.

one in Event viewer on today (latest crash)
Code :

1. Log Name: System
2. Source: Microsoft-Windows-HttpEvent
3. Date: 5/17/2009 5:09:59 PM
4. Event ID: 15016
5. Task Category: None
6. Level: Error
7. Keywords: Classic
8. User: N/A
9. Computer: mark-PC
10. Description:
11. Unable to initialize the security package Kerberos for server side authentication. The data field contains the error number.
12. Event Xml:
13. <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
14. <System>
15. <Provider Name="Microsoft-Windows-HttpEvent" Guid="{7b6bc78c-898b-4170-bbf8-1a469ea43fc5}" EventSourceName="HTTP" />
16. <EventID Qualifiers="49152">15016</EventID>
17. <Version>0</Version>
18. <Level>2</Level>
19. <Task>0</Task>
20. <Opcode>0</Opcode>
21. <Keywords>0x80000000000000</Keywords>
22. <TimeCreated SystemTime="2009-03-17T21:09:59.081Z" />
23. <EventRecordID>25122</EventRecordID>
24. <Correlation />
25. <Execution ProcessID="4" ThreadID="68" />
26. <Channel>System</Channel>
27. <Computer>mark-PC</Computer>
28. <Security />
29. </System>
30. <EventData>
31. <Data Name="DeviceObject">DeviceHttpReqQueue</Data>
32. <Data Name="SecurityPackage">Kerberos</Data>
33. <Binary>000004000200300000000000A83A00C00000000000000000000000000000000000000000000000000E030980</Binary>
34. </EventData>
35. </Event>


Warning
1
Code:
Code :

1. Log Name: Application
2. Source: Microsoft-Windows-User Profiles Service
3. Date: 5/17/2009 2:07:27 AM
4. Event ID: 1530
5. Task Category: None
6. Level: Warning
7. Keywords: Classic
8. User: SYSTEM
9. Computer: mark-PC
10. Description:
11. Windows detected your registry file is still in use by other applications or services. The file will be unloaded now. The applications or services that hold your registry file may not function properly afterwards.
12.
13. DETAIL -
14. 2 user registry handles leaked from RegistryUserS-1-5-21-3663195757-1971576328-4261918285-1000_Classes:
15. Process 948 (DeviceHarddiskVolume1WindowsSystem32svchost.exe) has opened key REGISTRYUSERS-1-5-21-3663195757-1971576328-4261918285-1000_CLASSES
16. Process 1808 (DeviceHarddiskVolume1WindowsSystem32spoolsv.exe) has opened key REGISTRYUSERS-1-5-21-3663195757-1971576328-4261918285-1000_CLASSESLocal SettingsSoftwareMicrosoftWindowsShellMuiCache
17.
18. Event Xml:
19. <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
20. <System>
21. <Provider Name="Microsoft-Windows-User Profiles Service" Guid="{89B1E9F0-5AFF-44A6-9B44-0A07A7CE5845}" EventSourceName="profsvc" />
22. <EventID Qualifiers="32768">1530</EventID>
23. <Version>0</Version>
24. <Level>3</Level>
25. <Task>0</Task>
26. <Opcode>0</Opcode>
27. <Keywords>0x80000000000000</Keywords>
28. <TimeCreated SystemTime="2009-03-17T06:07:27.000Z" />
29. <EventRecordID>8485</EventRecordID>
30. <Correlation />
31. <Execution ProcessID="0" ThreadID="0" />
32. <Channel>Application</Channel>
33. <Computer>mark-PC</Computer>
34. <Security UserID="S-1-5-18" />
35. </System>
36. <EventData Name="EVENT_HIVE_LEAK">
37. <Data Name="Detail">2 user registry handles leaked from RegistryUserS-1-5-21-3663195757-1971576328-4261918285-1000_Classes:
38. Process 948 (DeviceHarddiskVolume1WindowsSystem32svchost.exe) has opened key REGISTRYUSERS-1-5-21-3663195757-1971576328-4261918285-1000_CLASSES
39. Process 1808 (DeviceHarddiskVolume1WindowsSystem32spoolsv.exe) has opened key REGISTRYUSERS-1-5-21-3663195757-1971576328-4261918285-1000_CLASSESLocal SettingsSoftwareMicrosoftWindowsShellMuiCache
40. </Data>
41. </EventData>
42. </Event>


The other warning is the same thing, but not the process 1808, just 948.