I have a file that was originally an Illustrator file, and I saved it as SVG in Illustrator. I went to open the SVG file in Inkscape .40 & .40+ (today's CVS) and the log window popped up with:
"WARNING: Requested update while update in progress, counter = 4"
The end # (4) varied between 4-8, and there were probably 50+ instances of that message. One time, it eventually opened the file, and when I went to save it as an Inkscape SVG, Inkscape crashed. I figured I'd check here first to see what that message is about before filing a bug, but my guess is the file would be handy for debugging purposes.
http://www.scislac.com/inkscape/cammy-mix.svg (1.6 megs)
(it's an old project I wanted to get converted to SVG)
On a side-note... I think I understand how Illustrator does it's drop-shadows now. It appears that it creates an embedded bitmap image for every shadow (almost like a clone though, since it updates with modifications to the original object). If this copy of the file loads, you'll see the missing image "red Xs" on the left ones face and behind her... where there were drop shadows before. It seems like a good method that we may want to take into account for our own use.
If I should file a bug on this let me know.
-Josh