Confirming this bug. Indeed setting it to "true" (in my case it was "dom.ipc.plugins.enabled" that was set to false) helps, but I had to set it to "false" to prevent Firefox from working really slowly when there was a Flash video when I was using GNU IceCat (a rebrand of Firefox) on Ubuntu 11.10.
Confirming this bug. Indeed setting it to "true" (in my case it was "dom.ipc. plugins. enabled" that was set to false) helps, but I had to set it to "false" to prevent Firefox from working really slowly when there was a Flash video when I was using GNU IceCat (a rebrand of Firefox) on Ubuntu 11.10.