Sudden strangeness in PATH - eviltoast

I have suddenly found that /usr/games has disappeared off my path. Not only that but my normal otherwise but sudo enabled user seems to have a superuser’s path?

rhudson@adam:~$ echo $PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

rhudson@adam:~$ id -u 1000

What would have changed suddenly? It was not like this yesterday. kpat is in /usr/games and I was able to launch it from task manager yesterday, but not today.

I have rebooted twice so far. I can run kpat by opening it from Dolphin.

I don’t want to have to re-install : ^ (