Everything is ok now, the server was slow because an asshole just was attacking the Sexcoin Pool (sxc.cryptovalley.com) with DOS. Managed to stop the attack.
Yep. Seems to be working well. Although there was just a real fast round where I didn't get any PPLNS shares, even though I've been mining constantly and a lot of shares were included. What are the settings like on your PPLNS?