problem with roaming profiles size

[Paulo Gomes]

I have 50 users in a small network with one Samba 2.0.7 server and 8 NT
wks. My problem is with roaming profiles size, since users use internet
explorer and the cache files is saved to the profiles dir. Can i define
a limit for the profile of the users? Can have a single profile for all
users?
With System Policies i make the ntconfig.pol andi used the option to
exclude dirs in roaming profiles. I works fine for admin users, but for
all other users just not works.