Hi,
smokin-guns.net is no more the official URL and current owner removed his frameset without telling us, so for every one to know:
http://www.smokin-guns.org is definitively the only official URL.
About the error, please don't publish for everyone such screenshot as it reveals some of your private informations... Here you should better complain directly toward us privately... Btw I think we have an issue with the signature size... Do you try to update your signature through the WWW site ?
Also the server should upgraded during the next weeks and more memory will be allocated for the site on the hostinbg system.