AMD 64 - 64 bits

When you have a 64 bits processor you can use a 64 bits version of linux for taking advantage of the full possibilities of your processor (all distributions have a 64 bits version).

However there are some differences with 32 bits distributions, most often due to packages that don't exist for 64 bits.

Unfortunately there is no 64 bits flash plugin.

The first possibility was to install 32 bits binaries of firefox to use 32 bits plugin. The problem is that it is possible to launch simultaneously a 64 bits and 32 bits version of firefox, so that you had the choice between using always the 32 bits binaries (which is a little bit frustrating), or closing all your sessions of firefox when you want to use flash and launch the 32 bits version.

But now there is a solution : nspluginwrapper which, as its name suggests it, wraps 32 bits plugins to launch them in your 64 bits browser.

Moreover, it is difficult to make simpler :

emerge nspluginwrapper
nspluginwrapper -i /usr/lib32/nsbrowser/plugins/libflashplayer.so

I tested it with flash7 and it works perfectly, and it is said that it works very well with beta flash9 too.