Thanks Bob
Yes it is really weird that we have not been able to have consolidation run for more than 7 days since we upgraded to DP8 back in November 13. In DP 6.20, it was not unusable to run consolidation for more than 1 year without having to perform a full backup (and only because it was our call, not after an issue).
I was aware of the daily tasks, but for some reasons, that script seems to run only every 7 days as shown in the screen shot attached.
Also, the database itself is not corrupted, even afer a consolidation failure
Will carry on looking
Vincent