I've just suffered my 3rd puncture in 6 months and it's beginning to piss me off now! It's my second new rear tyre on the Fazer and the tyre's only done 400 miles. The previous tyre had only done 2000 miles and had been repaired once already so I got it changed to be on the safe side.

Hey! This pic should add a little cheer - maybe it's a new record?
Rode my new Fazer 8 home at 1pm, picked this up at 5:30pm! 85 miles on the odometer 
Approx. 10mm diameter - saw it at the tyre shop the following morning, it appears to be approx. 1/2 turn of a 3" diameter suspension leg spring from a car!
The lucky thing for me is that when I pulled up the tyre went flat in less than 20secs, seems the speed kept the thing sort of sealed.
No plugging that one - had to be recovered via AA   
I think my glass was half-full & not half-empty that day...Didn't stop me racking up nearly 400miles over the weekend though!
Frank