Hello,
Running x2go 3.1.1.4-0~592~precise1 on 12.04, I'm still seeing x2gocleansessions not properly cleaning up after its children, resulting in a bunch of zombie processes.
I added a very basic SIGCHLD handler to the perl script and it seems to have been doing the trick, at least for the past few hours.
I just added: $SIG{CHLD} = sub { wait };
After the existing: $SIG{TERM}=\&catch_term;
-- Stéphane Graber Ubuntu developer http://www.ubuntu.com