Originally posted by gopikrish
I logged in as user "gopi" and I did the command "chmod 644 *"
Where did you give this command? If in your home directory, then set the permission of it as 755 (don't give write permission to others and your group if it's something like `users'). Then there shouldn't be a problem. But if you changed some ownership, or run that command in somewhere else then try to find out the directories you altered. For example you could look at the shell history or find the files has the permissions 644 and owned by `gopi' using find
command. Refer to the find man page for specific parameters: