I have tried 1.3.79 on RHEL4 with kernel 2.6.9-5.EL(selinux disabled). First observations: - PAGs work as they should and are robust against setgroups(). - With memcache everything works as it should, at least in first approximation.. - With disk cache the very first write operation to /afs hangs forever... Is there anyone who managed with 1.3.79/disk cache on RHEL4? Andrei.