Got some strange errors all of a sudden

I have a windows xp pro sp3 workstation logging into a windows 2003 R2
Standard DC server SP2
I run Windows Live One Care and when the backup runs I get these errors. I
have been running the backup for over 4 months the same way and today these
started to appear

Only thing I can find are issues on Windows 2008 servers
this is on a Windows XP Pro workstation


Event Type: Error
Event Source: VSS
Event Category: None
Event ID: 12305
Date: 12/22/2008
Time: 6:01:25 AM
User: N/A
Computer: TGKW001
Description:
Volume Shadow Copy Service error: Volume/disk not connected or not found.
Error context:
CreateFileW(\\?\Volume{d48d3a68-65b1-11dd-b0f2-0013201992d2},0xc0000000,0x00000003,...).

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 49 4e 43 49 43 48 4c 48 INCICHLH
0008: 32 30 35 00 00 00 00 00 205.....
0010: 53 50 52 44 49 46 46 43 SPRDIFFC
0018: 39 36 00 00 00 00 00 00 96......


Event Type: Error
Event Source: VSS
Event Category: None
Event ID: 5013
Date: 12/22/2008
Time: 6:01:47 AM
User: N/A
Computer: TGKW001
Description:
Volume Shadow Copy Service error: Shadow Copy writer RemovableStorageManager
called routine OpenNtmsSessionW which failed with status 0x80070015
(converted to 0x800423f3).

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 57 53 48 43 4f 4d 4e 43 WSHCOMNC
0008: 32 32 39 32 00 00 00 00 2292....
0010: 57 53 48 52 53 4d 43 00 WSHRSMC.
0018: 35 32 30 00 00 00 00 00 520.....


Any ideas or thoughts

Thanks

Tom