Has deepbit slowed down this week?
proportional payout would be great at >5 blocks per day but is problematic with <1
that leaves pps as the only reasonable option.
Has deepbit looked at dgm stats?  That would remove the possible parasitic gain of running on deepbit proportional for the first 2 hours of a block and if nothing were found then poolhop to the highest pps anywhere which might be ozcoin. 

IF deepbit has slowed down, that looks just like the effect of several big miners pool-hopping out of here when the block seemed too long, leaving the smaller miners stranded with a discouragingly long unfinished block.  I'd rather there be some diversity of pools so that nobody has 51%.  What does everyone else think?