This is the warning to anyone who uses the McAffe Virusscan with atomatic update set to "ON"
Lates .dat file pushed by the McAffe to your computer will cause the system to go down with the DCOM pop-up message displayed on the screen.
Majority of the corporate users are affected. There are some workarounds posted on the web already. The easiest one is to reboot in the 'Safe mode with networking'.
Good luck to you all.