I recently did a Knoppix 3.7 install, and everything seemed to be going smoothly until this morning when I tried to input my root password and an error came up telling me that the password was incorrect. I tried several times, but it kept telling me that the password was wrong. I then booted into single-user mode and reset the root password, and then rebooted normally. Again when I tried to input the root password it told me that it was incorrect.

Any ideas as to what could be causing this and how it can be fixed?

Thanks a lot

Jeff