Comment 4 for bug 434050

I found the problem, I upgrade from 9.04 32 bit to 9.10 alpha 64 bit. I happen to have the 32 bit version of the libflashplayer.so in my local directory .mozilla/plugins

I removed the plugin but now firefox couldn't find a suitable plugin to load. I went to Adobe website and it allowed me to download a falsh plugin but I was unable to install it as gdebi failed with a wrong architecture error message.

finally I downloaded Adobe beta 64 bit flashplayer plugin and now my flash pages are all working.

Users who switch from 32bit to 64 bit will have this issue, there probaly needs to be a flashplayer plugin included with firefox for 64 bit users, if that is not already being done ..