On 2012/06/11 06:38 (GMT-0600) Marvin L Jones composed:

> Does anyone know how to back off Firefox 13 to the earlier version?

You can install as many Firefox or SeaMonkey versions as you care to. Just 
download the bz2 archives from any of Mozilla.org's ftp mirrors, and unpack 
them to separate directories in /usr/local or somewhere in $HOME. Sharing 
profiles is a bad idea, so separate ones for each version should be created 
and maintained. Running multiple versions is also possible, and instructions 
for all this are on both Mozillazine and Mozilla.org. To make starting them 
easier, edit your application starter to add new entries that include the 
full pathname of the executable and '-P <profilename>' in the command field 
for each additional installation you've created.

Usually I've found that such installations will not find any installed 
plugins. If you like that, you need do nothing more to set up each 
additional. If you want them to find plugins, create symlinks in their plugin 
dirs from the global plugin files you do want them to find. Not creating one 
to libflashplayer.so means FF won't crash on Flash pages, while it can remain 
available to the package manager installed version to see if and when updates 
cause problems to stop. :-)
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