After my second email to AVG (Grisoft) telling them how this also effects cached web pages, they now say they will try to find a "workaround".
Here is the latest reply (including my email):
Hello,
thank you for notice, we try to find any way for workaround.
--
Pavel Krcma
>Hello again. I am a Windows XP user so I have no use for the file
>myself. I
>should also bring to your attention though: AVG also flags cached web
>pages
>containing the line in question as the BAT/ExitWin virus. An example
>of this
>can be found by following the link below:
>
>
http://www.computerhope.com/issues/ch000321.htm>
>If you download that page into a Firefox browser cache of a machine
>running
>AVG, then refresh the page, AVG will throw up a false virus warning.
>
>Perhaps then it would at least be a good idea for AVG to publicly
>announce
>this being an issue with the AVG antivirus software, and that the
>issue
>cannot be corrected.
>
>Thanks.