Thanks for the responses.
I had searched the archives, but it seemed that the others experiencing
this message couldn't get it to boot at all... I didn't see anything
with hard vs soft resets. It seems odd that it could be a
bad/incompatible/incorrectly-written card since it comes up at all, but
I'll pick up a new card and give that a try.
In an unrelated note, it would be nice if the CF slot on my Alix board
didn't require complete removal from the case to swap the CF, but