In answer to the above the KAT site blocks ads for members who are logged in.

Being a new member of the KAT forum I was unaware of this fact.

Looks like it is back to the drawing board to try and find another answer.

Makes it difficult when my re-installed Avast is no longer issuing HTML:Iframe-inf infection warnings.

It appears there are still people with Avast suffering this problem on the KAT site.

Thunder Bird.