I did post it on this forum a month or so ago and also on chat at Crypsty, that they needed more servers and employees. I use to be a manager at my old job for 5 years, when you project you will have a certain amount of business, you slight adjust for that by adding proper equipment(s) and staff for higher than projection, just in case.
I think they make a good job there and the whole "industry" is growing very fast...nobody can plan this perfectly...but one question: other people also have the problem that coins are not refunded after canceling a sell-order? or takes it just some time?