Interesting...
Thisis the very basic FTP script that is on Symantec's site as per the aforementioned link.
code:

open ftp.symantec.com
anonymous
les_ligetfalvy@abicon.com
cd public/english_us_canada/antivirus_definitions/norton_antivirus/static
lcd C:\temp
bin
hash
prompt
get symcdefsx86.exe
quit

As you can see, it is not in the date coded format. Are you saying these are not as stringently tested?

I would be interested in seeing what you've got.

Incidentally, they released a new pattern today.

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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.