"Operation b49," as Microsoft dubbed the takedown, has severed as many as 90,000 infected PCs from the master control channels that feed them updated malware, spam templates, and other malicious data, Microsoft's Jeff Williams wrote here. He cautioned that security watchers
can't yet claim victory, but said the initial success of the operation provides a guide for future takedowns.
Waledac has been spewing spam across the internet for a while now. Maybe we'll start seeing a small reduction of crap in our inboxes now (don't count on it.)