海外記事から引用

It seems thatMicrosoft has started flaggingGmail as a virusin their virus scanning softwareWindows LiveOneCare. Many people are reporting that every time they openGmail, a warning is displayed telling the user they are infectedwith "BAT/BWG.A".

Microsoft 製のWindows LiveOneCare というウィルス対策ソフトを使うとGmail がウィルス扱いされるそうです。
あいかわらず、Microsoftって感じで・・・
まあ、Linux ユーザの僕には無関係ですけど。