Bug#709255: (no subject)

0 1 f111110101011 at gmail.com
Tue Dec 3 19:13:50 UTC 2013

Since this bug still seems open, the same happened to me, instead I 
didn't have Gnash but the proprietary Flash plugin.

update-alternatives --config flash-mozilla.so
And selecting Lightspark helped the situation and made it work inside 

However, it still isn't listed within iceweasel's browser plugins.

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