I'm wondering if it's anything to do with lag/latency on MP, because if I'm playing SP, or if I host a server, and launch it as the only player in it it's not happening (yet).
The other thing is, the data link is working, as I get data link contacts on my radar page, as long as I don't switch an MFD to the actual SA page itself I have no problem.
The track file should only be a minute or so long, as I was only starting up, never even go airborne.