Many users may find that Flash animation in GTK-2.x+ build of Mozilla / Firefox to be very slow, here is what you can do to work around it:

1. Speeding up Flash animation for GTK-2.x+ build (and 2.x+ build only) of Mozilla or Firefox:

-> From Mozilla bug #219625
Just export this environment before starting Mozilla / Firefox:

[font:arial]export FLASH_GTK_LIBRARY=libgtk-x11-2.0.so.0[/font]

You can add this line to the execute script such as "firefox.sh", so it will be exported by default.

2. BTW, a new Linux Flash plugin update is released, 6.0 r81:

# LinuxFlash: flash-plugin-6.0.81 Update
# Macromedia Linux FlashPlayer download

Flash plugin 6.0r81 no longer depends on the old (gcc 2.96) version of libstdc++.

3. Also, it looks like FlashPlayer 7 for Linux Beta is coming:

http://www.markme.com/mesh/archives/004504.cfm

Note: This is re-posted from PCLinuxOnline.

Now if someone would only write a flash 'editor' for Linux ;-)...

Looks like it is coming to Linux later:

http://www.linuxartist.org/modules.php?name=News&file=article&sid=276

Folks, FlashPlayer for Linux 7.0 r25 is released today!

-> Macromedia Flash Player Download Center Linux

With the new version of Flash plugin, this trick is NO longer required. Enjoy.

PS: To install Flash plugin for multiple browsers, you can simply do by creating symlinks at the {browser path}/plugins directory, for example, here's how I installed FlashPlayer 7 for Linux on Mozilla-1.6 and Firefox:

1. Extract the file install_flash_player_7_linux.tar.gz

$ tar -zxvf install_flash_player_7_linux.tar.gz

2. Create a directory, and copy the plugin files into it:
Let's do it as root so we can allow system-wide access of the plugin:

$ su
# mkdir /usr/local/flash-plugin
# cp libflashplayer.so flashplayer.xpt /usr/local/flash-plugin

3. Enable the plugin for the browsers you desire:

# cd {path of browser}/plugins

# rm libflashplayer.so flashplayer.xpt
(Enter this only if there's any prior version existed)

# ln -s /usr/local/flash-plugin/libflashplayer.so
# ln -s /usr/local/flash-plugin/flashplayer.xpt

Finished!

RPM version:

http://macromedia.mplug.org/