Avira, the anti-virus software maker who is probably more well known for its free product, is not making many friends on the paid side of its business today. The company rolled out a defective update earlier today to its paid consumer and business editions that is effectively bricking PCs running all flavors of Windows XP, Windows Vista, and Windows 7 (…apparently Windows 95 users are in the clear). The misbehaving software is flagging valid Windows processes and then preventing the operating system from booting. For machines that are able to boot, the issue is also blocking a number of third party softwares, including most notably Microsoft Office. Avira is currently looking to understand the problem and has offered some less than pleasing workaround options in the meantime. [Source ZDNet]