Imagine that you bought a Ford F150 truck, one of the top selling vehicles in the world. Then imagine that you were on an F150 truck Forum....where you would hear from every owner on the Forum about every little or big problem they encountered. In no time, you would begin to think the F150 was not a good vehicle of choice. Meanwhile, in the real world there are millions of F150's performing daily, near perfectly. Forums squeeze all the information in a tight knot...but do not necessarily represent a true picture of what happens in the real world.
Now, if independent reviews by major truck magazines and websites known for their testing abilities find these same problems consistently, and rate the F150 as questionable, you have more credible information to make a sound decision.
Getting the picture......? The K5 has received outstanding and glowing reports from almost every reviewer and tester out there. Mainly because it is a fantabulous camera, with amazing abilities at a very affordable price. Heck, even those with problems reported here don't want to let their K5 go, because it is amazingly wonderful! Just read the posts here........even those with problems love the K5, just not their particular problem....and keep in mind that most like me have no problems at all!
As in anything, the decision is up to the buyer, but if you just use some very simple logic and the facts provided, the K5 is the camera to own, without a doubt. At the current price, it is a steal, but you won't know that until the first time you crank up the ISO and get a shot that you never ever got with what you previously owned. Then you too will be amazed....and that is not all of the K5, it is just the beginning. The faster focus and very quiet shutter may mean you are not even aware of your first K5 shot.....it might be that different for you from your K10D.
Best Regards!