I think the subject pretty much says it all.
For years, I have been using a perl script to download the latest 
firefox and thunderbird .bz2 files from mozilla.org using 'wget'. If the 
file is more recent than my current version, it gets moved to a 
directory for storage.  It then gets untarred and the resulting 
directory gets moved again, to where I want the binary.
Recently, however, the thunderbird binary that I got popped up an error 
and said to get the most recent stable version from thunderbird.net.  
(Googling showed that a lot of people got hit with this.)  I got the 
file from thunderbird.net.  Fortunately, there were no incompatible 
changes made to my profile.  (The script will be backing up the prfofile 
before it is used again.)
To get the file from mozilla.org, I am using:
system('wget --quiet --show-progress --content-disposition 
"
https://download.mozilla.org/?product=thunderbird-latest-ssl&os=linux64&lang=en-US"'); 
But, if thunderbird.net is the preferred location, does anyone know the 
equivalent way to use 'wget' to download the latest stable file from there?
Marc