Thank you for your quick reply. The Distribution I am Using is CentOS 6.3 and I have enable acl in /etc/fstab.
[root@Samba3 ~]# mount
/dev/mapper/vg_samba3-lv_root on / type ext4 (rw,acl)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw,rootcontext="system_u
/dev/sda1 on /boot type ext4 (rw)
/dev/mapper/vg_samba3-lv_usr on /usr type ext4 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
gvfs-fuse-daemon on /root/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev)
I am puzzeled as everything seems to work except permissions.