Crap.

The only way that would be cross-chaining is if the crank is 'Q'-ed out too far (not properly centered in reference to the cassette). Either that, or the 10-speed system is so finicky that I'd tear it off the bike and wing it into the river at some point.

9-speed doesn't have that issue.

(Funny -- never thought I'd sound like a "Lud" talking about 9-SPEED!)