hi, I would like to introduce my self as vijay raj iam using redhat linux for quite some time i think there is a security bug in the os i will try to explain the scenario we will have two users on the server of the same group let one user is raj and other user is bhoj both are the members of group king now both of them have not given the permission for the group members to write to there files but his home directory has the permission to read let us take raj's home directory, bhoj has logged in as bhoj and changed his directory to raj's home directory where he does'nt have any permission to write to a file but he can read a file now he opens a file and reads the contents and makes some changes into it and tries to save the changes it will not allow but if he tries to write using :wq! it will allow him to make the change and it will put bhoj's login name and his group in raj's directory actually it should not allow to make change's to his file but with :wq! it will allow to save the changes made to the file for which he does'nt have the permission to write how is this possible is it a bug or is there any particular way in which i should implement the security please let me know mail me at [EMAIL PROTECTED] waiting for your reply please mail me as soon as possible Thanking you vijay raj __________________________________________________ Do You Yahoo!? Kick off your party with Yahoo! Invites. http://invites.yahoo.com/