I don't know why I read that forum. It's so incredibly negative.
There are also positive threads about K-5 and K-r...
- But I agree that at equipment forums the voice of customer with unrealistic expectations dominate.
About that 18-135 Pentax lens, it is Weather Resistant, but it first has to show its IQ performance over longer all-in-one zooms before it will be a winner (given price, especially if bought separately).
The K-5 is almost "exactly" as expected, that is besides the theoretical high price, but given competition it will probably go done fast like K-7 to replace it position within that market segment. Biggest complain there seems to be it doesn't have anything more special...
Although I personally like the K-r most, there is one specification Pentax updated that they don't mention too much. Due to the larger LCD the camera became significantly larger than the succesful K-x. It is unclear if the K-x will stay for the entry level market segment, so also the body price competitive edge is at risk here...
Oh, last two weeks I bought M 28 mm F2.8, M 50 mm F1.7, M 135 mm F3.5, M 200 mm including non Pentax 500 mm F8 and auto macro converter for only little over 100 Euro and the two DA kit lenses 18-55 II + 50-200 for exactly 100 Euro. And I just started looking

.
- I will also go for new 35 mm F2.4 and be looking for an ultra wide angle (at reasonable price) and try to find out which lens best fits my candid family portrait applications (long prime at which focal length vs fast zoom).