Hi, some update yesterday which was not yet available on August, 1st, complete broke my system. (Probably systemd-224)
I couldn't do anything, especially no downgrading a package. I had to revert to a backup from July, 29th. It turned out that something has installed /lib/udev while removing the symlink /lib -> /lib64 on my machine. Therefore /lib did contains nothing but udev which broke my system completely. Has anybody made a similar experience or does anybody have explanation for that? Many thanks, Helmut.

