Thank you Savage,
As much as I like the Glock, nothing has disappointed me as much as the extractor issue. I carry one every day, it hasn't dissuaded me from my appreciation of the Glock pistols, but after seeing so many fail it replacing them has become an automatic response for me.
The only other failure we have had are the factory plastic spring guide rods. 3 of them have cracked at the base, which required replacement. However, it appears that the fact they cracked did not take the weapon out of service.
As an agency we go thru about 20-30K rounds a year in various training and qualification exercises, some much more than others of course (SRT, etc) and the pistols take it well.