I am having the same problem, I feel that it must be a main server problem and not just your end. Unfotunately Admin is the only person who can take care of this and he is unavailable at the moment. All I can do at the moment therefore is ask that anyone experiencing this problem to please bear with us and the issue will be resolved as soon as it can be. Thanks in advance for your understanding.
Thanks for letting me know. I can now shout at the hosts of our domain. Due to me being busy at times like today I should really look into giving someone access to the hosts as well. Looking into it.