Could you tell me where this happens to you? Working with physics like this has many case specific problems.
When I am trying to hoist myself out of the window and when I'm in the sewers trying to get over the pipes.
Thanks, I've fixed up the window and tweaked the pipes. I'm not sure exactly what was wrong with the pipes, but I've tried to make it 'safer' anyway. The fixes will be in the next update along side radical changes to the window area.