In checking out my new K-5, I have taken a few pictures leveling the camera with the electronic level. I would say the level device is out - there is a definite horizon tilt on all those pictures!

I also tried the option for automatic correction (of the horizon), and this appeared successfully to correct the tilt (I have only tried it once, and I suppose it could be that I just got it right in the first place)?

It seems a slight omission that there is not an electronic adjustment to set the level to a correct reading in the first place, which would then allow for camera-to-camera differences in manufacture.

Do others use the level, and do you find it useful / accurate?

Daniel has the answer.
SRGB color space produces names of IMGP
AdobeRGB has names -IGP

Thanks - just nice to know these little points.

Yes they open correctly. I have tried reformat of SD card - file names remain unchanged. Perhaps I should try a camers reset?

What first brought it to my attention was my RAW editor Silkypix. In "old" folders, it displays thumbnails of all images. In the most recent 2 folders, it does not display those images which are .tif. However, I can select tif images in the file display, and they correctly open!
If I use Pentax Photobrowser, all folders display correctly.
Quite odd!

Re K10, and file names.
I have various file names, such as IMGP1234, -IGP1234, IGP1234.
There seems no logic to these, and I cannst see at what point the character sequence changes.
Has the charagter string become corrupted (should it always be IMGP), and if so, can it be reset?