Globaliser, you are quite correct, and certainly not pedantic. I should have checked before posting.
The Lavasoft site has the following statement
Please upgrade to Ad-Aware SE.
We are now discontinuing reference file and product support for Ad-Aware 6 and urge users to upgrade their existing copies to the new Ad-Aware SE. We continued support of the older version of Ad-Aware to allow users time to upgrade while still enjoying the protection they have come to expect from our software.
H