What probably happens is your ship spawns at the system center, coordinates 0,0,0 (usually inside the sun) instead of the jumphole's exit coordinates. This happens on lots of servers when there is lag. When the connection is lost during jump, the coordinates won't be set, but the new system will. As a result, you get coordinates 0,0,0. I found this out when i was flying a battleship and had enough time to realise what was actually going on.