The issues with the thermal paste and the lead-free solder probably weren't issues anyone (including Sony) could have predicted would happen over time. From what I can tell Sony hasn't really done anything to correct this issue other than making revision to the system (like making smaller size CPU & GPU) so it runs much cooler.
maybe YOUR fat survived.... I'm not going to sit here looking up 5 year or w/e old web pages to give you links to how many took a crap on people less then a year after launch... lol But it wasn't pretty. That's why i waited for a redesign, and even a long time AFTER that just to make sure. rofl didnt' get mine till last x-mas
Mine fat PS3, lasted 3 years before it got the YLOD.