I was looking at the address you guys use to make the faucet payments and noticed a bunch of unconfirmed transactions. Then a day later some of those transactions aren't listed anymore. There's still one unconfirmed transaction Since you're sending payments through blockchain.info, it only retries for a certain period of time, then stops if no miner accepts it, so some people aren't getting their withdrawals because you're using too low a transaction fee. It would be better if you bunched together the payments and then use the recommended transaction fee.
Are you sure they got deleted?
We haven't received any notification via email from Blockchain and i'm sure they would let you know.
However we have started sending many payments in one unique tx with the default fee as you said
