According to first page of cpanel installation instruction

http://www.cpanel.net/docs/whm/WebHo...stallation.htm

i should have
If a separate mount point exists for "/tmp", then the installer will verify and potentially remount the partition with the "no exec" option. Additionally, the installer will ensure that the sticky bit is set on the directory and that the other permissions are correct.
here is my case, i do have a separate /tmp partition, but how come

nano -w /etc/fstab
LABEL=/ / ext3 defaults,usrquota 1 1
LABEL=/backup /backup ext3 defaults 1 2
LABEL=/boot /boot ext3 defaults 1 2
devpts /dev/pts devpts gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0
LABEL=/home /home ext3 defaults,usrquota 1 2
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
LABEL=/tmp /tmp ext3 defaults 1 2
LABEL=/usr /usr ext3 defaults,usrquota 1 2
LABEL=/var /var ext3 defaults,usrquota 1 2
LABEL=SWAP-sda5 swap swap defaults 0 0
/tmp /var/tmp ext3 defaults,bind,noauto 0 0
I don't see any noexec there. and where is that "sticky bit"?