Again, answering my own question.
I think my issue here was due to accidental overlapping incremental backups.
In a synth policy, having 2 incremental backups that overlap:
EG:
IMG1 INCR
start: 1/20/10 17:01:00
elapsed: 0:56.000
IMG2 INCR
start: 1/20/10 17:01:03
elapsed: 0:57.100
The Synth
We are seeing quite a few of these on out 6.5.4 w2k8 master/media setup
and can't account for them as the chain of Full/Diff-Incr are good.
Has anyone else come across these when by all accounts they should have
succeeded?
NBU support is unfortunately not being very illuminating.