Well if you are asking about using until its death, I crashed a seat. (Actually it was the lady behind me who didn't use her brake pedal, she used my car. But I digress.)
The DOM/Serial sticker on my infant bucket was placed in the stupidest spot. On the bottom of the seat, right where it curves from the bottom to the back, and centered. So, right where the harness adjuster strap rubs it every time. It was long gone before I realized there was a problem. It was bought in Oct/Nov 2006, so I'm ballparking a Jan 2006 DOM, and comfortably using it until the end of 2011. If we have an infant in 2012 or 2013, maybe I'll actually get around to contacting the manufacturer and finding out if they can look up the info for me. In the meantime, if there's a recall on that brand, I won't have a choice but to not use the seat just in case it is recalled.