problem with buildworld

[Filippo Moretti]

Buildworld failed with libpam/modules error.I tried to delete /usr/obj/usr but I get the following error[root at sting /usr/src]# rm -rf /usr/obj/usrrm: /usr/obj/usr/src/i386.i386/lib/libpam/modules/pam_opieaccess/pam_opieaccess.so.6.debug: Bad file descriptorrm: /usr/obj/usr/src/i386.i386/lib/libpam/modules/pam_opieaccess: Directory not emptyrm: /usr/obj/usr/src/i386.i386/lib/libpam/modules: Directory not emptyrm: /usr/obj/usr/src/i386.i386/lib/libpam: Directory not emptyrm: /usr/obj/usr/src/i386.i386/lib: Directory not emptyrm: /usr/obj/usr/src/i386.i386: Directory not emptyrm: /usr/obj/usr/src: Directory not emptyrm: /usr/obj/usr: Directory not empty[root at sting /usr/src]# Any help would be appreciatedsincerelyFilippo