[tschneidereit]

Can you give steps to reproduce this crash? It should definitely not happen. In fact, until https://bugzilla.mozilla.org/show_bug.cgi?id=558184 is implemented we rely on an installed Flash plugin to make the Flash detection used by most sites work.

[yellowapple]

Steps:

0) Have a Macbook Air running OS X Yosemite

1) Install Firefox

2) Install Adobe Flash

3) Install Nightly

4) Install Shumway

5) Attempt to open http://www.albinoblacksheep.com/flash/shumway

6) Watch Firefox complain that the tab crashed

7) Try to reload the tab

8) GOTO 6

Disabling Flash (via the Addons screen in Firefox/Nightly) seems to fix the issue.