Gnash 8.10 has been released, please update ! Thanks ! Reproducible: Always
Some 0.8.10 files have appeared on the mirrors but the download page still says 0.8.9 http://www.gnu.org/software/gnash/download.html and the new version has not been tagged in git.
Strange, I see 0.8.10 on http://www.gnu.org/software/gnash/download.html Maybe are you using an outdated mirror ?
Yes, they updated the page today: Updated: $Date: 2012/02/20 15:19:32 $
Fixed in CVS.