First Sophos now Symantec

http://www.symantec.com/enterprise/s...6/07/post.html

""A number of the issues we had identified in the earlier Vista builds have already been fixed in later ones. We fully expect that trend to continue up until Vista’s final release. [But] network stacks can take several years of real-world scrutiny before they are battle hardened. It will be interesting to observe to what degree the Windows Vista network stack accomplishes this in such a compressed time frame,"