Slightly O.T. - problems with VSS and BackUp Exec

Running SBS 2003 Premium, Exchange, WSUS, ISA 2004, 2 NICs and a router,
dynamic IP, DDNS service, Symantec BackUp exec 10.1 (10d).

Am working with Symantec, but service is slow. I'm getting the following
error:

Job ended: Friday, December 29, 2006 at 12:26:20 AM

Completed status: Failed

Final error: 0x80042316 - 0x80042316 (2147754774)

Final error category: Other Errors



For additional information regarding this error refer to link
V-79-32772-8982




Errors

Click an error below to locate it in the job log





Backup- WCT
AOFO: Initialization failure on: "Shadow?Copy?Components". Advanced
Open File Option used: Microsoft Volume Shadow Copy Service (VSS).

VSS Snapshot error. A Microsoft Volume Shadow Copy Service (VSS)
snapshot is already running on the target computer. Only one snapshot can
run at a time. Try running the job later.



I don't knwo what's causing the VSS to be running at this time. My
Scheduled Tasks has it running at noon M-F. What should I do/check? (I
haven't been able to do a successful backup now since 4 December 2006.)

--
Mike Webb
Platte River Whooping Crane Maintenance Trust, Inc.
a 501 (c)(3) conservation non-profit organization