Inkscape does not handle the extralight vadiant of dejavu sans well and treats it as book dejavu-fonts-experimental-2.19-1.fc8.noarch inkscape-0.45.1-1.fc7.x86_64
related upstream bug reports: https://sourceforge.net/tracker/?func=detail&atid=604306&aid=904962&group_id=93438 https://sourceforge.net/tracker/?func=detail&atid=604306&aid=1448618&group_id=93438
The upstream reports are marked private. Is there any progress on this issue?
So the first one is now https://bugs.launchpad.net/inkscape/+bug/165872 I was not able to locate the second report.
We won't fix this; Upstream should and knows about the issue.