>Working with fedora 11 an a x86_64 architecture, lyx >crashes every time that I browse the document. It >looks like that it is due to the pictures.
This is a bug in qt4.5.[0,2]. See bug #5957: http://www.lyx.org/trac/ticket/5957. This happens when you scale the image to 1,2,5,10,20,25 or 50% and the image has a size such that the scale times the size is exactly between two integers. Vincent