The following is an excerpt from a client's machine with NOD32 4.0. Code: 5/29/2009 10:04:09 AM Real-time file system protection file a variant of Win32/PSW.YahooPass.NAD trojan error while cleaning Event occurred during an attempt to access the file by the application: C:\WINDOWS\system32\wbem\wmiprvse.exe. The column which indicates the location of the virus is BLANK! I submitted the offending executable to virustotal.com and it checked out 100% clean. The error message comes up a couple of times a day and the user is very concerned about it. What do I do?