This is a known problem that started several months ago when we changed the way our cache works. Normally ctrl + f5 corrects it.
However, as you guys have been able to tell, we've been having some issues over the weekend. It's all being worked on, but unfortunately it's not as easy as replacing a fuse.
Remember, Rome wasn't built in a day! And don't worry, it took Nero seven nights to burn it down. So we've got time!