If you request a new account and it takes me longer than 24 hours to approve it then it's possible that your address looked like a spammer's address. Sometimes these are more obvious than others.
For example, there are currently five member requests that I've deemed are probably spammer accounts. Of those, three are clearly obvious and two are questionable... one I'm totally on the fence about.
Anyway, if I haven't approved your account in 24 hours then please send me a direct message. My e-mail address can be found on the main wiki page:
http://mythruna.com/mediawiki/index.php?title=Main_PageThanks.