User profile load issue

Hi techies, I need some help on the above issue; it happens both on Windows XP and 2000. The problem is that for a particular user, everytime she logs off, she loses all her settings, including drive mappings, printers etc. I have run the hive cleanup tool, but in vain. The users have mandatory profiles setup in a windows 2000 server environment. Another issue is that for other users, the profiles load but keep mapping the old network printer(client setup, shared), even when I delete it and install the new one, it reappears on next logon. Could anyone help out on these issues? Thanks for everything.