Ah.. Ok. I was just going by the EXIF data for the pictures and it showed ISO of 400.
On my camera regardless to what I set the ISO if I put it in full auto it overrides the manual setting. It will only take the manual setting in PROGRAM or the other MANUAL modes.
To expand on the RAW thing a bit..
If you look the the histograms for your pictures you'll most likely find that you are several stops above what the camera can handle on the low end. What that means is that you can put the camera in Tv and set your shutter speed for 400 which is about 2 stops above what you had to use on your posted pics. This should sharpen up your pictures nicely.
If you shoot in RAW mode getting the extra stop or two back in post processing is no problem. The picture will look very dark on the screen if you look at it in the field but these cameras handle dark detail so well that it will look fine when processed on your computer.
Just throwing out some ideas, every little bit helps.
Chris