Don't know, but one would presume that a pay for version 7 would be an
improvement on a free version 6. Not always the case I know.
I think they don't "hold back" in the free version, but the newer
version has been better defined and is possibly more accurate in
detections. A better engine, I suppose is what it's called.
"AVG Anti-Virus 7.0 includes an improved scanning engine which
supports the rapid implementation of new detection techniques. Some of
the improvements include new functions (such as checking (do we want
to say "testing") and healing of the system registry), improved system
performance (for example, quicker access to tested objects), and the
optimization of update files to make them smaller, especially in case
of "priority" updates. The combination of system modularity and
language independence significantly shortens the process of creating,
testing and distributing, as well as installating AVG Anti-Virus 7.0
update files. Also, computer restarts following updates will be
necessary much less frequently. Another improvement is the
classification of updates according to their importance in three
different levels - priority, recommended and optional. In addition to
releasing virus database updates whenever new virus threats are
identified, regularly scheduled updates will be released two times a
week."
