The tracker backend has been started again, it keeps dieing due to some server issue's we've been having, shouldn't be getting connection refused anymore.
The "Sorry Pal" message is due to changes we made to the db, that mean the registration script is no longer capable of inserting new users into the database. Delta will rewrite the script to work with our changes when he gets a few spare mins.
Also it should be noted, that yahoo has blacklisted all datorrents emails, so if your lucky the message will go to spam, but the yahoo mail servers do reject the vast majority of mail sent its way. We'll be modifying the registration script so that it will no longer accept yahoo email address. Yahoo seems to be the only major email provider that we have any issues with.