RavMonD.exe进程占cpu

我i5 450m的cpu win7环境 RavMonD.exe进程经常占50-60%的cpu

用户系统信息:Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; QQDownload 663; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)