ntbackup not starting

[olaritter]

heya

googling and whatsnot for couple of hours. have some very weird problem with ntbackup. it is scheduled to run on both dc1 (primary-main) and dc2 in a 1/2h time difference. have problems in the past few weeks, sometimes the ntbackup does not start at all, no error, nothing. yesterday same issue, and actually on both of them.
-in scheduled tasks "last run time" column shows correct time, but infact didnt run.
-in application event - there is no trace
-i have applied sp1 to both win2k3 servers otherwise ntbackup wouldnt work properly; + applied uph clean service (UPHClean-Setup.msi)
-i think ALWAYS (not 100%) UPH clean service is initiated just before ntbackup starts, that happened yesterday as well with the 'backupuser' domain account for backingup. UPH service did it job, but then the ntbackup did not start at all. i had problems with userenv, thats why i applied UPH service:
event id log from dc1:
The following handles in user profile hive mydomain\BackupUser (S-1-5-21-194334382-4178160658-3649238951-1392) have been remapped because they were preventing the profile from unloading successfully:

rsmsink.exe (5564)
HKCU\Software\Classes (0x78)
HKCU\Software\Classes (0xa4)
HKCU\Software\Classes (0xac)
HKCU\Software\Classes (0xcc)
HKCU\Software\Classes (0x100)

from the other server (dc2):
The following handles in user profile hive mydomain\BackupUser (S-1-5-21-194334382-4178160658-3649238951-1392) have been remapped because they were preventing the profile from unloading successfully:

rsmsink.exe (5880)
HKCU\Software\Classes (0x80)
HKCU\Software\Classes (0xa8)
HKCU\Software\Classes (0xd0)
HKCU\Software\Classes (0x100)
HKCU\Software\Classes (0x104)

nothing more to trace and reference upon for troubleshooting. anyone knows or can give a hint as to why ntbackup schedule wont start?
(the point is that sometime starts, sometimes not; no changes in between, just restart eventually)

 

[olaritter]

and another thing, I do in cmd the following on both domain controllers:
at \\dc1
at \\dc2

I dont get the tasks scheduled listed...

this is weird; why this happens?

thanks

/ola

 

[olaritter]

and from schedule log on dc1:
Started 05.06.2006 20:00:00
"DC1_C_SS_DATA.job" (ntbackup.exe)
Finished 05.06.2006 20:33:03
Result: The task completed with an exit code of (0).
[ ***** Most recent entry is above this line ***** ]

http://www.mcse.ms/post6283746.html

I did this, as I see it as a potential issue on my side; Dont know why it happens if it happens. Though I see service start call was sent for RSM, and successfully started. Then stopped 33 minutes later or so.