I finally got a flat tire! On September 26. Cause - undetermined. The hole was there, but no evidence as to what caused it.
My most recent flat was on June 6. 3 1/2 months and 2251 miles ago.
A testament to the tires I'm rolling on - Vittoria Randonneurs.
Last year, between June 6 and September 26 - 8 flats. 2009 - 6 flats. 2008 - 7 flats. Yep, the tires are the difference. (I know what you're thinkin'. This guy keeps track of his flat tires? What a freak! I'm just happy that they seem to be taking less of my attention lately! If I start only getting one flat every 3 or 4 months, I'll probably quit keeping track.)
Those tires are a little harder to mount than some others. And they may roll ever-so-slightly more harshly. But I've got a new undisputed-champion favorite tire.