resetting You

Hello, I have managed to tame the Zen/Rug business on most of the machines I administer, but one of them is refusing to cooperate. Every time I try to run 'you' or configure it yast just crashes. There are no error messages or core files, just a shell prompt at the top of the screen hidden in the Yast display. Does anyone know a simple wayy of resetting You to a safe state? Is it safe for example to delete /var/lib/zypp and /var/lib/zmd ? Many thanks, Bob ============================================================== Bob Vickers Dept of Computer Science, Royal Holloway, University of London