Which part of Avast duplicates WD ? The behavior shield ?
I don't think WD is useless. It detected and immobilized the Vundo trojan on my box
over a year ago. It did enough that the system was stable enough for me to clean the
rest using MBAM and Spybot S&D manual scans.
Ever since then, I've had some respect for WD. Why just dismiss it?
I must admit though, the update process is annoying, however for the majority,
who fully turn on Automatic Updates, it's probably fairly transparent.