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