On Tue, May 13, 2008 at 07:43:33PM +0200, Harald Dunkel wrote: > Vegard Nossum wrote: > > > >Can you try to run "strace su someuser" instead? > > > > I tried, but its a Heisenbug: If I run it with strace (with or without > -f), then it doesn't get stuck.
even as root ? Because if you run strace on "su" as a user, you will lose the setuid which may change the conditions.