Same problem here! This happens more and more!
I'm loading wallets OK today, but sure had slow problems earlier in the week ... one evening I couldn't load at all.
Hoping this will sort itself out, or I'll be moving on, as we all deserve a regular working service.
I don't understand why don't Satoshi Labs just run 2 or 3 instances of the web site. You could use the other one when the first one is down and also the spread load would mean less race conditions in the backend code. You don't even have to have a load balancer, just make it www1. www2. etc.