I'm having some problems with the aspect ratio of figures which are inserted into Lyx. This is with version 2.0.3 on a Fedora 15 system.
I insert a .png screenshot with insert->graphics and set the width to some value (with the maintain aspect ratio box checked). The preview looks fine. But, when the file is printed in PDF the aspect ratio is not preserved. For example, a square image is stretched too much vertically (by a very noticeable amount). Postscript is the same. If I set both the width and the height then the PDF comes out as it should. If I view as LyxHTML then the size is also correct. I'm just using the default article style, with no packages inserted and an empty preamble. Any ideas what's going on?