Yep, I agree with your views about Avast4, unfortunately the reviewer at Clean Computing does not and has down graded Avast4 from 5 to 4 stars because of the last two VB100 results as quoted below:

“UPDATE: Recent tests run by Virus Bulletin suggest some problems. Avast! failed two tests against Windows XP Professional and Windows 2003 Server. We have readjusted our rating based on these tests pending updated tests. We sincerely hope Avast! addresses these issues as expeditiously as possible.”

http://www.cleancomputing.com/Software/antivirus.html[url][/url] >: >:(