Not sure if it is just for me but today it seems that both Vaios and Clanks have gone missing from the MegaMilestones lists - it seems this is irrespective of where you see them.
Whilst there is history of Clanks going missing - I was actually expecting it to go up today not disappear. But I doubt if some 80 odd Viaos could be a new lower limit for displaying them!
I'm imagine it's just a glitch but just in case it isn't I thought I'd mention it. It has totally hammered my SquarePants - if you'll excuse the phrase ;-) Cheers.