Description of Problem:
Nautilus crashes while thumbnailing an svg file
containing gradients in text (example svg see below)
nautilus: art_render_gradient.c:337:
art_render_gradient_linear_render_8: Assertion
`(stops[ix-1].offset <= offset_fraction + 1e-6) ||
((stops[ix].offset > (1.0 - 1e-6)) &&
(offset_fraction < 1e-6 ))' failed.

Steps to reproduce the problem:
1. put such an svg file into your home
2. try to run nautilus
3. happy crashing

Actual Results:
nautilus crashes shortly after startup

Expected Results:
it should render at least something instead of
crashing

How often does this happen? 
every time

Additional Information:

program and lib versions:
nautilus 2.6.3
librsvg 2.6.5

Sample svg:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
<svg
   xmlns="http://www.w3.org/2000/svg"
   width="210mm"
   height="297mm">
  <defs>
    <linearGradient id="grad">
      <stop
style="stop-color:#ff0000;stop-opacity:1;"
offset="0"/>
      <stop
style="stop-color:#0000ff;stop-opacity:1;"
offset="1"/>
    </linearGradient>
  </defs>
  <text style="fill:url(#grad);" x="300"
y="300">Nautilus, don't die!</text>
</svg>