Recent reboot on startup


The Dumb One
Just recently my T2 has rebooted shortly after startup. Then again after s couple of mins. 4 times a couple of days ago. It then 'settles down' and is OK for the rest of the time until the next day.
I have recently enabled DLNA on my WD NAS which I suspect is possibly the reason for the 'sudden' onset of reboots.
I have just now installed crashdiag, dlna_filter and reset the T2's DLNA database (in that order) to see what happens.
The T2 rebooted immediately after resetting the database (but not again in the last 1/2 hour or so). Is that normal?