Both passwords for both Users did not work to get into the system. It forced me into Guest User because the other User Accounts were gone, they disappeared. I had to reboot in Single mode and create a new account (rm /var/....) but the next day that one disappeared and I had to do it again! Does anyone have experience with this virus? Luckily my User Folders existed so I was able to back up my files but I want to fix the bug before reinstalling them to an account that might get wiped out again. Any suggestions?