I was grouped with some people for a few escort missions today... the first one, the game froze on undocking (just stuck with the third-person view of the station that sayd "leaving station") until I force-exited the client. When I logged back in, I was outside the station and heading into the docking bay at an angle and low speed. I had been re-admitted to the convoy group and it set underway the moment I logged back in.

I wasn't as lucky on any of the other tries. Several times after I would undock after taking the mission and the convoy would never appear. Sometimes it locked up again on undocking like the first time, and I would log back in, again moving toward the docking bay at an angle, but the missions never started and I never saw another one of the convoys we signed up for.