Crashed a nicely-built probe on Duna. Probe weighed just a touch under 8 tons, with 3 heavy legs. Made a nice, gentle touchdown at ~4m/sec, the leading leg (very, very slightly up-hill) happily spring-squished up until the probe over-balanced, and it slapped down shedding parts all over the place. I can't WAIT until they fix the friggin' legs!