Yep - me too. Thought it was just maybe site maintenance overnight (in the UK), but was like it for a few hours. I've been out most of the afternoon and evening here, but just got home & it seems to be Ok now.
I've just emailed Vital HQ because it's not stopped. It's seriously starting to piss me off now. I was hoping to have tomorrow night away from the site, but now that isn't going to happen!