Do not use 'ls -l' to view file protection. Special care has to be taken to generate different file protection rights for different files in the same directory. AFS tokens AFS does not use UNIX user IDs for authentification. Being able to run a program, ie login, on a computer does not always automatically imply that you are able to access files on it. By default AFS tokens, and corresponding access rights, expire after 25 hours.
Special care has to be taken when, ie, submitting batch jobs.
You must supply longlife tokens yourself. An AFS volume contains a subtree of related files and directories. AFSs disk quotas are with respect to volumes. Each night there is a backup made. All your files are copied into your directory 'Oldfiles' and frozen there.