After your post I looked carefully at my document, and I saw the difference. Everything with margins is OK, I didn't end description list on the previous page and on the page with figure everything was moved to the right except for figure, and it looked like problem ...
I have little problem. In default Latex generate caption from style "Figure" + index of figure in document. I want to have different style, exactly "Figure" + number of section + index of figure in this particular section.
I have been searching Internet trying to find solution, but I failed ...