This happened to me twice. When I logged out inside a building (houses, apartments), after my login, my character spawns under the building where it is impossiple to get out or get in in anyway. As you know zombies can get through the walls. I shot twice to attract a zombie there. It came to me, near me, but could do nothing, as I could do nothing to it.

...When my character stuck under the house, I joined a hardcore server. I went, looted etc. and I logged out. When I logged in back, I saw that the same thing happened. (related ss: "2014-02-11_00001")

[UPDATE / Getting out]
I did manage to get out of there. The way I did is joining a laggy server, optimally 150 < ping, I started running to the wall. Few seconds later, when connection was cut and came back, I was outside. {F30234} {F30235} {F30236}