I don't use the 'ruser' option to pam_radius.so, but while porting pam_radius-1.3.17 to Mac OS X 10.5.4 I noticed the following warning: cc -Wall -fPIC -arch i386 -c pam_radius_auth.c -o pam_radius_auth.o ... pam_radius_auth.c:1112: warning: assignment from incompatible pointer type Which equates to the following assignment: user = userinfo; Oddly enough these are locally defined as: CONST char *user; CONST char **userinfo; So I don't know that the 'user = userinfo' assignment is doing what was intended. Additionally, userinfo is assigned a few lines above that with the call: retval = pam_get_item(pamh, PAM_RUSER, (CONST void **)&userinfo); So a *** is being passed and cast as a **? That doesn't seem right. I would think that the ruser feature is not working, but I don't use it. Mark Horstman