Are there any known issues between SAV and VSS service? Volume shadow.

SAV 10.1.6 is on this box, but I am going to bunp it up now, it is a Proliant DL380 G3...

Once a week, my NAS server goes down, and when I look in  the applog, Symantec registers about 2 or 3 events at that time, and then a warning is sent about VSS
These events ALWAYS occur RIGHT before the shutdown on this server. I would like to know if there are any known issues or resolutions for this event.
Thank you.

Event Type: Warning
Event Source: VSS
Event Category: None
Event ID: 12290
Date:  11/3/2009
Time:  1:00:01 AM
User:  N/A
Computer: NAS
Description:
Volume Shadow Copy Service warning: GetVolumeNameForVolumeMountPointW( '\\?\Volume{b90154a1-5b22-11dc-819a-000bcdf17371}\'): 0x00000003.  hr = 0x00000000.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 2d 20 43 6f 64 65 3a 20   - Code:
0008: 53 50 52 52 45 47 4d 43   SPRREGMC
0010: 30 30 30 30 30 34 32 34   00000424
0018: 2d 20 43 61 6c 6c 3a 20   - Call:
0020: 53 50 52 52 45 47 4d 43   SPRREGMC
0028: 30 30 30 30 30 33 36 39   00000369
0030: 2d 20 50 49 44 3a 20 20   - PID: 
0038: 30 30 30 30 34 38 30 34   00004804
0040: 2d 20 54 49 44 3a 20 20   - TID: 
0048: 30 30 30 30 34 31 31 32   00004112
0050: 2d 20 43 4d 44 3a 20 20   - CMD: 
0058: 43 3a 5c 57 49 4e 44 4f   C:\WINDO
0060: 57 53 5c 53 79 73 74 65   WS\Syste
0068: 6d 33 32 5c 73 76 63 68   m32\svch
0070: 6f 73 74 2e 65 78 65 20   ost.exe
0078: 2d 6b 20 73 77 70 72 76   -k swprv
0080: 2d 20 55 73 65 72 3a 20   - User:
0088: 4e 54 20 41 55 54 48 4f   NT AUTHO
0090: 52 49 54 59 5c 53 59 53   RITY\SYS
0098: 54 45 4d 20 20 20 20 20   TEM    
00a0: 2d 20 53 69 64 3a 20 20   - Sid: 
00a8: 53 2d 31 2d 35 2d 31 38   S-1-5-18
00b0: 2d 20 45 72 72 6f 72 3a   - Error:
00b8: 47 65 74 56 6f 6c 75 6d   GetVolum
00c0: 65 4e 61 6d 65 46 6f 72   eNameFor
00c8: 56 6f 6c 75 6d 65 4d 6f   VolumeMo
00d0: 75 6e 74 50 6f 69 6e 74   untPoint
00d8: 57 28 20 27 5c 5c 3f 5c   W( '\\?\
00e0: 56 6f 6c 75 6d 65 7b 62   Volume{b
00e8: 39 30 31 35 34 61 31 2d   90154a1-
00f0: 35 62 32 32 2d 31 31 64   5b22-11d
00f8: 63 2d 38 31 39 61 2d 30   c-819a-0
0100: 30 30 62 63 64 66 31 37   00bcdf17
0108: 33 37 31 7d 5c 27 29 3a   371}\'):
0110: 20 30 78 30 30 30 30 30    0x00000
0118: 30 30 33 20 20 20 20 20   003