[fedora-my] suid and guid

[Umarzuki Mochlis]

i have 2 user (user1 and user2)
on user1 i copied firefox into its home dir
$ cp /usr/bin firefox .

then i set suid to firefox as user1
$ chmod u+s firefox

but i get permision denied when i ran firefox as user2

is this feature disabled on f12?

or maybe my method/understanding of it is off?

-- 
Regards,

Umarzuki Mochlis
http://debmal.my