一上QQ就弹出这消息框



一上QQ就是弹出这消息框..到底是怎么回事!!!我网页都没打开

用户系统信息:Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; QQDownload 667; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0); QQBrowser/5.0.6587.400 (trident)