"Exchange is currently under scheduled upgrade" (again!)
"Our programmers are working day and night on the Exchange update. Sorry for the inconvenience, we are not happy with it, too. Please, be sure, your orders and funds are perfectly safe."
In the past they have stated hours not day and night for the upgrades. Sounds like they may plan to be down for awhile this time.
I don't understand why they can't design their apps to move over to another node for an upgrade. OLTP online node switch over has been available in the industry for years. I'm thinking it must not be cost effective for them, even though they loose transactions during the down time, and customers who move over to other more available exchanges.