Although its not even consciously downloaded crud. Almost every other ad these days seems to contain a rogue AV downloader.

Doesn't look like Clamwin is going to make the grade. No on-access scanning makes it a lame duck for production use. We're definitely not looking for, or expecting, a free fix (cheap, maybe, but that is another matter ;) That's why I was hoping that some folks here had experience with one of the enterprise editions.