Recently, everytime when my system starts, Avast will report a "Win32: Trojano-3111" found in C:\drsmartload1.exe, also some file with the same virus under "temorary internet file" directory, and I just let Avast delete it, and do a boot scan. The boot scan found nothing, but same thing happens again when system starts, and the warning will popup periodically -- without doing much damage. When I look at my ADSL router's log, I can see that my computer is sending out requests to contact addresses like "192.168.*.*" more than 20 times in every minute. I found a process "MG.exe" running in the system, and after I kill this process, the warning doesn't happen anymore. I located the file "MG.exe" under C:\windows\temp and deleted it, hoping that I've resolved the problem. But after reboot, same thing happens again, and I cannot find where "MG.exe" is. All that I can do now is to kill the process "MG.exe" after every system startup to prevent any damages.
In Google search of "drsmartload1.exe", I found that it's been widely talked about on non-English sites, but haven't yet found a simple solution.