Hi there: I supposed you have tried executing freeradius in debug mode (my favorite line is radiusd -sxxz -l stdout, and a enlarge my xterm so I have like 80 lines), to look at the reply list it sends on the Access-Accept packets, or have it log them on logfiles/sql tables.
Also, be careful with cistron standard config files, as freeradius are a bit different (at least as users file is concerned). Haven't tried putting cistron users file on freeradius (and enabling cistron compat mode), as my current radius setup has a dirty hack to mysql, proprietary tables, etc., etc. My 2 cent Jonathan. - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html
