Can't believe this is still an issue. I am using Smart Security 9 with Win 7 x64. Every other time I logout from a user account my screen gets dark and the PC is still running, but it doesn't respond. I put it in and out of sleep and no change. I disabled the ESET Firewall and haven't had the problem since. This really needs to be corrected. I share my PC with 3 others and at least 2 of us are logged in at a time.