... then it may be time to re-align:
http://www.guardian.co.uk/world/2010/mar/02/earthquake-chile-earth-axis
I've been wondering just how badly affected the ESO at Paranal (http://www.eso.org/public/) has been affected by that quake. I expect they got shaken about quite a bit, but this report (http://www.eso.org/public/events/announcements/ann1010/index.html) says they suffered no damage...
But their goto's will be off a teensy bit, just like my LX90... ;)