I also have this exact problem seeming to happen almost half the time, also on a GoDaddy wordpress hosting account. I am in the process of changing the domain name, and can provide you with further information once that has been taken care of.
Edit: the error does not break my entire page, it just displays that error string in the sidebar or content section depending on the location of the event feed that is broken at the time. All event feeds exhibit this error periodically, but they do not necessarily all display the error at the same time.
