This isn't a bug in Grml's zshrc but instead an bug in Zsh upstream, see e.g.:
http://www.zsh.org/mla/workers/2011/msg00235.html
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=353863
So update your Zsh version (and/or bug Ubuntu that they provide a fixed package, the one in
Debian/unstable is known to be working).
regards,
-mika- |