> so has this issue been fixed in the inkscape trunk then?
Probably not since the bug was in cairo.
Cairo 1.6.0 includes the bug fix and anyone using Inkscape 0.46 for PDF export should be using cairo 1.6.0 or later unless they like getting huge PDF files containing one big image.
This is a cairo bug. Fixed in git master:
http:// gitweb. freedesktop. org/?p= cairo;a= commit; h=7e83d6e6fb8c4 b11d5d95acac4a3 5df8969e0944