yes it does!
You can have the AF active while you manual focus and it give you a signal when the AF thinks the lens is in focus.

Also with the rest of your comment you don't adjust the AF with your focus screen. You should adjust the AF with the help of photos you take and do the same with the focus screen.
The Sensor is the point you calibrate around.

Dust is everywhere like John says, nothing you can do about it.

One thing that I do notice is that I've no less problem with dust then I use to have.
I remember cleaning my camera almost monthly in the beginning but now it hasn't been cleaned for almost half a year.
I also already have cleaned the KX twice already in the same time.

Could it something that make the sensor of new camera more static or something like that?

Will you are certainly right about the noise getting less with higher resolution on a print but I was talking about photos taken at low ISO so there is almost no noise there so nothing to gain. With higher ISO you are certainly right, I've even uploaded ISO1600 photos here from the K10D, because they are only 800px they still look very good

You've also apps for other type of phones, I've standard a weather forecast for my location and besides that I can access a app that shows my a satellite image with animation of cloud-cover and where it rains. You can often make a good guess with that.

What do you use?

You already said it reflections, it try not to overexpose those so that would lead to an underexpose photo. Besides that most Pentax underexpose the flash around the 0.7 to 1 EV standard.

Most likely because it integral part of the program, I don't think it will ever be able to do that.

Peter do you mean the catalogue file or the photos?

Did not say that anywhere?

No problem happens to me as well.

Yes resolution has certainly something but CCD sensors are better at lower iso because in the way they are build and behave. The Dynamic range and uniformity of the CCD sensor is better as that of the CMOS sensor, because the ISO noise is not so much a point at low ISO those things I just named are more important.
Indeed you can make a bigger print with a higher resolution but there is not much use if you use all those pixels. If you're going to compare A3 prints which the K10D and the K7 are easily capable off resolution has not so much of an effect, certainly because you take more distance from the photo the larger it gets.

Here is a read about the sensor link

As for the K-X, superb camera and sensor so please don't get me wrong but if you shoot ISO100 or ISO200 the K-X won't provide you the best image quality Pentax has to offer. The DxO test doesn't show it but artefacts and other thing start to play a roll when using software tricks to use ISO100 & ISO200 because that's with the K-X does.

From what I've seen that's not true, the K200D has better low iso performance than the K7 and the K7 has better low iso performance than the KX and vice versa for high iso.
The sensor in the KX is aimed at iso 400 and does perform very well but it isn't as clean as the K7 or the K200D at low ISO.

Also I find DxO very sceptical, there is quite some difference between the Samsung & the Pentax model for example, how can that be?

If you would test a 4 pixel camera according DXO test you would get the perfect camera