For me, it's been:
Adélaïde d'Anjou, (5 husbands), curator Anne M Berge - 5 instances
Boso, Count of Arles, curator Flemming Funch - 6 instances
Bernard King of Italy, curator Ofir Friedman - 1 remaining instance
Four Bernards went away from the Merge Center today, which could mean that Ofir dealt with them (accepted/rejected/whatever). Or it could mean that the Geni server is possessed by demons. Hard to tell which.
It is kind of annoying to have these profiles still sitting in the merge pending box after weeks of sitting there (particularly Adelaide). I mean you try to address merge requests quickly because you want the tree fixed, you drop everything to carefully consider all the relationships and dates, and then these profiles just sit there. Whether it's a system flaw or someone freezing the profile to "fix" it... if it's frozen for fixing, it doesn't take that long to fix a profile. I could have inserted Adelaide's life story, and the life story of all her nearest relatives (including all five husbands), in the time that it's been sitting in my Merges Pending.
Also, been running into new problems - hung Data Merges (7 of them now - no matter how many times you make your selection and press save changes, the pending merges stay - driving me nuts), Tree Merges that, once you make your selection, turn around a say that you can't do that because you are splitting the tree, and then remain in your Tree Merge box afterward (used to be they didn't make the Tree Merge queue until the merge was actually ready to be dealt with - or at the very least, when once you've merged out all the duplicates and run into the Tree Split warning, it disappears from your Merge Pending box).
This of course is just venting, and it's probably not particularly constructive (I usually figure it better to just move on to another part of the tree until the programmers finally "smite" the demon), but this is the place to vent it seems to me.
Okay, back to research for me...