I've put about 12000 rounds through mine in the last couple years. The only hiccup was at round number 10,246 (iirc), the slide-stop broke. Actually it probably broke on round 10,244 because I noticed after that shot the slide-stop was sticking out ever so slightly. I pushed it back in, took another shot, had it push out about an eighth of an inch again, was dumb enough to push it in again, rack it a few times (empty), seemed fine so I took another shot and it did the same thing. I then decided to field-strip it and realized the slide-stop had broken right in the middle of the "pin" part of it. Lucky for me there was no damage done from firing a round or two with that broken slide-stop, to either the gun or myself!
Apparently it's the weak link in the CZ75 chain. From a bit of internet scouring it seems it usually happens between 7500-15000 rounds. Mine broke right in the middle of that, and the ammo used was almost all factory American Eagle 115gr and 124gr, as I wasn't reloading pistol at that point.