corrosion - see thread on UKMOC board about 'paint peeling off'!!!
  Had it with both of my monsters - 1st one within 5 months - and the 2nd bike inside 3 weeks

  Both times coming off the crank cases (& also the clutch cover/rear sets & handle bars on the earlier bike)  - the former not easily spotted on any 'covered up bike' - unless you remove the fairings regularly for inspection. 
 D(UK) are doing quite a few under warranty... 
 C