Hi Craig
I've read the reference you mentioned.
Database maintenance is enabled, but I think something else is going on.
In the application log I see entries like bellow. These are not systemdatabases. I'm wondering what the functionality of those backups is.
For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 58 47 00 00 0a 00 00 00 XG......
0008: 0f 00 00 00 57 00 49 00 ....W.I.
0010: 4e 00 47 00 45 00 4e 00 N.G.E.N.
0018: 45 00 30 00 31 00 5c 00 E.0.1.\.
0020: 43 00 45 00 56 00 49 00 C.E.V.I.
0028: 00 00 07 00 00 00 6d 00 ......m.
0030: 61 00 73 00 74 00 65 00 a.s.t.e.
0038: 72 00 00 00 r...
Event Type: Information
Event Source: MSSQL$CEVI
Event Category: (6)
Event ID: 17055
Date: 10/07/2010
Time: 3:49:24
User: ----
Computer: ----
Description:
18264 :
Database backed up: Database: t002007, creation date(time): 2009/08/12(11:04:09), pages dumped: 2019, first LSN: 4710:32:1, last LSN: 4710:34:1, number of dump devices: 1, device information: (FILE=1, TYPE=VIRTUAL_DEVICE: {'t002007_00__9e758a89_55cc_46fe_9278_327d4bc1ebee_'}).