[Inkscape-user] save as PDF loses jpegs & bitmaps

I upgraded to 0.44 (using svn) for the enhanced transparency handling but - altho' I do get vector graphics retaining their transparency when saving to PDF - I am now losing all .png .jpg and bitmaps. They don't show up at all. ldd /bin/inkscape shows that all dependencies are met on my Ubuntu Dapper box running kernel 2.6.15. Am I missing something simple or is this a bug?