eJabberd stability

Hi all,
I was wondering what make the jabber.org server stop working so often, it can become really annoying when it happen too often.

I'd like to know what could be done to improve stability of the server, I don't know if the problem is software-related or hardware-related.

So, what could be done to help the server to be up more often ?

If I can help... :)

Detlev.