I am also mining 42coins in
http://42.cryptopools.com I have had my payment address changed on me 2 times now and can't get an answer from them.
All of my coins are being sent to other addresses and the only conclusion I can come to is the admin is changing this himself. How else could it be changed without knowing my email, password and 4 digit pin number?
If not I hope that he can provide an explaination and get my coins back!
Few accounts were compromised through bruteforce. They either got into your account with your password from another pool that was hacked (pooljunkie) or bruteforce their way in with your weak password.
PM me your pool username and 42coin address and if we can verify the offending address in your account, we will send you what you have in your balance.
-tb-