Help! My Linux box was working properly last night, but today I am unable to login as the default user. The symptoms are:
I have set up my machine to not show the login dialogue, and instead go directly to KDE (I know, bad security practise, but this is the only PC in the house, used only by myself and it's not connected to anything but a dial-up Internet service).
I shut down the machine normally last night, but upon booting up this morning, it presented me with the login screen. A bit puzzled, I attempted to login as the default user, but upon hitting "Go!" the screen blinked, then spat me back onto the login screen!
I attempted to login as the default user in Failsafe mode, and was successful, but was unable to find anything overtly wrong. I logged in as the root user, and KDE launched successfully. I created a dummy user and was able to login normally. I then logged back in as root, deleted both the dummy and existing default account (deleting their home directories), then created a new default user with the same name and UID. I was able to login normally and go online... then the sound driver failed and I had to reboot to get it working again. After the boot splash screen, I was presented with the login dialogue... and was unable to login as the default user again!
Can somebody help me fix this? I hate having to backup my files and reconfigure... and worst of all, I'm typing this with Window$ and it really chafes!!