Me? Worried? Nah... But then I don't live in Christchurch or Wellington.
It gets me thinking when one happens, but I'm not in any danger of upping sticks and moving due to the risks.
(Off to make sure the CD kits together)
Make sure you have one too. It's not just earthquakes and volcanos that you may need one. I would imagine flooding for a few on here would be more of a real concern.