Funny enough, never had a problem, had "none" as proxy. Today I started having massive problems, searched, found this thread, and lo and behold, switching proxy to EU and it works like a charm.
Germany here, so maybe continental EU works for that proxy.
Zombies are one of my least favorite species of the Galaxy. I must destroy this one and remind you Humans to open a new thread if you need to post on a topic that has not seen the light of day in over 30 days.