On Mon, 14 Apr 2008 15:48:10 -0700, Robert M. Gary wrote:

It also often does not pick up airborne IFR clearances.

There is also some weirdness for flights where IFR is canceled in the
air. I once called a friend asking why he'd diverted. "Diverted?" was
his reply. He'd canceled, however, which somehow was entered/displayed
as a diversion.

I've seen this twice now (though I've no way of knowing how many flights
I've seen where IFR was canceled that this didn't occur).

- Andrew