I think this link will help
Less known Solaris features: Getting rid of Zombies - c0t0d0s0.org (http://www.c0t0d0s0.org/archives/4778-Less-known-Solaris-features-Getting-rid-of-Zombies.html)
I think even you delete the .profile file there is /etc/profile for all users on the system , the system first look at user .profile to see if there is any settings, if not he will look at...