I hope this claims process works out after 90 days. I don't think they would re-open bitcoin central if they were going to run with the bitcoins.
That's 3 months where a very large amount of bitcoins are locked up..
What else would they do, assuming they're legit?
Decrease the waiting period, and thus decrease the security? I think 90 days is a good choice. If they're scammers, they're scammers, and there's nothing to be done about it, or at least the 90 day wait doesn't change much. If they're for real, the 90 day wait is 100% a good idea, for obvious reasons.
90 days is illogical WHEN it is coupled with their other statement: "If several claims have been filed for the same url, we will process those claims on a case by case basis, under the presumption that the claim we received first belongs to the legitimate balance holder."
Think about it a little...
Of course if Paymium have the intention of keeping all left over coins not claimed after 90 days then maybe there is logic from that perspective. But that's the only place it makes sense from...