Authentication error

Hi all,

Last weeks it is almost impossible to authenticate my user account. I try to update or install apps, and I am quite sure that my password is right, but most time I don’t have any access to services for which I need root access. Now and then it works, in about 1 of 2 of 100 attempts.

I changed my password, but that wasn’t the solution either.

Does anybody recognize this behavior? Many thanks in advance!

I am on KDE NEON 22.04 LTS.