Hi Tom, thanks for your post, in this way I found out more simmers have this issue (and I became mamber of Avsim immediately ;)
I noticed similar behaviour and remember it was 'suddenly' there.
Must have been some keys I pressed (not on purpose).
Seems I may have another option to check:
I am flying X-plane 10 on a Mac and under menu selection 'view'
there is an option called "toggle Cinema Verite"- I clicked it once and the shaking is gone.
Hopefully it resolves the issue for you and others too.
Happy landings!
