Make sure you run the right klist and kinit commands. If you are not running the right programs run dce klist and dce kinit instead. Every users home is a fileset. This means that if you write a file in someone elses home it will not be on you quota but on his filesets quota. DFS has an interesting feature called sysname.
Every architecture has a sysname.
To see the sysname use the cm sysname command. This way you can create links that go to different files depending on which architecture you are on. Another example where it might be usefull is different directories for different architecture. Fileset - A collection of files and directories creates a fileset. Every users home is a fileset.