Hiya,
As John Ratsey mentioned my Jazz Hybrid is now at 198,000 miles on a 61 reg (September 2011) with no gearbox issues. The CVT fluid has been changed every 25,000 miles by a Honda main dealer (7 changes so far).
The air conditioning compressor clutch has become badly worn and works fine whilst the air temperature is not too hot, but if its a very hot day it gives out, so at the moment I don't think it justifies a £600 repair bill for the few days when the outside temperature is over 25 degrees.