I've found that after upgrading to 11.10 (32 bit), I can no longer watch streaming flash video on sites such as Ustream or Justin.tv. I've spent the last several hours installing this package and uninstalling that package, and purging everything flash-related and starting over, to no avail. I was curious if anybody else has run into similar issues and found a fix.
I'm running an NVIDIA card, and I've tried both sets of drivers available.
I got tired of the adobe-flashplugin package failing on me so I did it manually.
Download the flash plugin from the adobe website. Pick the 64 bit, .tar.gz version. Take the libflashplayer.so file from that archive and move it:
sudo mv libflashplayer.so /usr/lib/mozilla/plugins.
Make sure it is executable:
sudo chmod +x /usr/lib/mozilla/plugins/libflashplayer.so
Screw the buggy installers.
Pros : It's gonna work.
Cons : It won't update automatically.
Go to firefox ads on (Edit -> preferences -> manage ads on) and then install plugin flash-aid. Install stable flash version instead of beta. It worked for me.
