Is it possible that your confirmations are rising so quickly because multiple people are generating the same blocks at the same time? I know one of the devs mentioned that this does happen, and it makes things act weird until the blocks are verified by multiple other clients, at which point one of them wins out. It may be that the confirmations are tracking all of the blocks, not just the ones that ultimately win out...?

Or, is it possible that each subsequent block is also getting confirmed? In other words, block 66,000 was the block in which your transaction took place... so then when block 66,001 is created, you get 1 confirmation. Then when block 66,002 is created, it in turn confirmed block 66,001, so you get 2 more confirmations - bringing the total to 3...?

Still wrapping my head around parts of it, so I may be way off.