I'm getting my found blocks accepted at last. But they appear in 'transactions' with an address in the client for a few seconds, then disappear. What is going on?
Someone else if finding them and submitting them to the network faster than you. For coins with lots of hype (like a pokemon coin) it's better to jump in a pool.
All the pools are laggy and the payout scrypts are behind but hang tight. your coins will be payed out once the scrypts catch up to the madness.