I am new to this forum, so I hope I follow proper procedure. I am often getting a report from Avast Anti Virus that a root kit has been detected. The message recommends "removal" which I always check, then also calls for a scan on next startup. There is no report of error on these procedures, BUT the message returns--not every time, but occasionally. Here is the filename refrenced: mrxsmb 14>system32\DRIVERS\mrxsmb 10 This may not be exact, but very close. I am running Windows 7 X64 on an Asus Ultrabook. Can I get help here. Thanks.