I just checked the settings you mentioned (Connection->data ; do not choose "use system username" but change it to "prompt" and empty out the "auto-login username"). My settings were the same (I didn't change anything). I figured I would give it one more try since I had Putty up. So, I went back to the Session portion and logged on using SSH. I don't know why, but this time it asked me for my username. I entered root and then entered my password when it asked. And it let me log in. Thanks for your time and help!
SirMegabyte
SirMegabyte