With libc6 2.11.2-7 (current squeeze) I experience this issue, too. Logging in as thomas and using "id" shows my groups, using "id thomas" does not. When using this server as an NFS server, I have to remove --manage-gids from RPCMOUNTDOPTS in /etc/default/nfs-kernel-server, otherwise accessing restricted folders does not work.
The workaround (/etc/nsswitch.conf: group: nis files) helps with "id", I still have to test NFS. Regards, Thomas -- tho...@intevation.de - http://intevation.de/~thomas/ - OpenPGP key: 0x5816791A Intevation GmbH, Neuer Graben 17, 49074 Osnabrueck - AG Osnabrueck, HR B 18998 Geschaeftsfuehrer: Frank Koormann, Bernhard Reiter, Dr. Jan-Oliver Wagner -- To UNSUBSCRIBE, email to debian-glibc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20101217122055.808481673.tho...@intevation.de