Getting sick of constant crashes in Firefox due to flash I've moved my flash
viewing habits to epiphany but still get the same issues. The URL in question
this time is 

http://www.youtube.com/watch?v=fFqQOlYE4EE&feature=fvst

versions are as follows:

firefox-3.5.3-1.fc11.x86_64
xulrunner-devel-1.9.1.3-1.fc11.x86_64
xulrunner-1.9.1.3-1.fc11.x86_64
xulrunner-devel-unstable-1.9.1.3-1.fc11.x86_64
xulrunner-debuginfo-1.9.1.3-1.fc11.x86_64
xulrunner-python-devel-1.9.1.3-1.fc11.x86_64
xulrunner-python-1.9.1.3-1.fc11.x86_64
epiphany-debuginfo-2.26.3-4.fc11.x86_64
epiphany-2.26.3-4.fc11.x86_64
swfdec-debuginfo-0.9.2-2.fc11.x86_64
swfdec-mozilla-0.9.2-2.fc11.x86_64
swfdec-gnome-2.26.0-1.fc11.x86_64
swfdec-mozilla-debuginfo-0.9.2-2.fc11.x86_64
swfdec-gtk-0.9.2-2.fc11.x86_64
swfdec-0.9.2-2.fc11.x86_64


$ epiphany 
unhandled event 19
Loading stream: http://s.ytimg.com/yt/swf/watch-vfl123151.swf
Loading stream: http://s.ytimg.com/crossdomain.xml
Loading stream: http://s.ytimg.com/yt/img/black-vfl69395.jpg
Loading stream: http://s.ytimg.com/yt/swf/ad-vfl123166.swf
SWFDEC: ERROR: swfdec_font.c(378): tag_func_define_font_name: didn't find a
font with id 9
SWFDEC: ERROR: swfdec_font.c(378): tag_func_define_font_name: didn't find a
font with id 7
Loading stream:
http://ad.doubleclick.net/879366/DartShell7_7.swf?adServerHost=http://ad.doubleclick.net&mtfNoFlush=true
Loading stream:
http://ad.doubleclick.net/pfadx/DARTSHELLCONFIGXML;dcmt=text/xml;
Loading stream:
http://ad.doubleclick.net/879366/DartShellPlayer7_7_37.swf?adServerHost=http://ad.doubleclick.net&mtfNoFlush=true
Loading stream:
http://ad.doubleclick.net/879366/DartShellPlayer7_7_37.swf?adServerHost=http://ad.doubleclick.net&mtfNoFlush=true
Loading stream: http://www.youtube.com/null
**
Swfdec:ERROR:swfdec_resource.c:216:swfdec_resource_stream_target_open:
assertion failed: (movie)

I will add the full crash dump