Distribution: FC5
Samba version 3.0.23c-1.fc5

I discovered, for an exemple, if you have a user group with 3 members (Alan, Baker, Clive), before 3.0.23c this line at smb.conf worked fine:
 
valid users = @group
 
But with 3.0.23c update it doesn't work anymore.
 
You have to replace the line like this:
 
valid users = Alan, Baker, Clive
 
I mean, replace the "@groupname" with the complete userlist of the group separated by commas.
 
It´s a quick solution, but some groups are big and it´s kind of hard to do that with all of them.
 
Other people are experiencing the same problem, as related at fedora forum (http://www.fedoraforum.org/forum/showthread.php?t=125460).
 
 
I´d appreciate any help or comments.
 
 
The workstation I´m trying to access the shares from is a Windows XP one, and it´s name is "rbsm204".
 
The user is "felipe" and he belongs to "admin" group.
 
I found this at my workstation log (attached):
 
[2006/09/30 14:58:35, 3] lib/util_sid.c:string_to_sid(223)
string_to_sid: Sid @admin does not start with 'S-'.
[2006/09/30 14:58:35, 5] smbd/password.c:user_in_netgroup(423)
Unable to get default yp domain, let's try without specifying it [2006/09/30 14:58:35, 5] smbd/password.c:user_in_netgroup(427)
looking for user felipe of domain (ANY) in netgroup admin [2006/09/30 14:58:35, 0] lib/fault.c:fault_report(41)
===============================================================
[2006/09/30 14:58:35, 0] lib/fault.c:fault_report(42)
INTERNAL ERROR: Signal 11 in pid 13861 (3.0.23c-1.fc5)
Please read the Trouble-Shooting section of the Samba3-HOWTO [2006/09/30 14:58:35, 0] lib/fault.c:fault_report(44)
From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
[2006/09/30 14:58:35, 0] lib/fault.c:fault_report(45)
===============================================================
[2006/09/30 14:58:35, 0] lib/util.c:smb_panic(1614)
PANIC (pid 13861): internal error
[2006/09/30 14:58:35, 0] lib/util.c:log_stack_trace(1721)
BACKTRACE: 19 stack frames:
#0 smbd(log_stack_trace+0x2d) [0x8a78ad]
#1 smbd(smb_panic+0x5d) [0x8a79dd]
#2 smbd [0x89351a]
#3 [0xa5f420]
#4 /lib/libc.so.6(__strdup+0x1f) [0x346893]
#5 /lib/libnsl.so.1(nis_list+0x5d2) [0xc64b5f]
#6 /lib/libnss_nisplus.so.2(_nss_nisplus_setnetgrent+0x8f) [0x51262e]
#7 /lib/libc.so.6(innetgr+0xb2) [0x3c1d05]
#8 smbd(user_in_netgroup+0x65) [0x6de1e5]
#9 smbd(token_contains_name_in_list+0x23d) [0x6e0bdd]
#10 smbd(change_to_user+0x4d2) [0x71f642]
#11 smbd [0x73eb38]
#12 smbd(make_connection+0x194) [0x73ffa4]
#13 smbd(reply_tcon_and_X+0x21d) [0x7038ed]
#14 smbd [0x73b0e0]
#15 smbd(smbd_process+0x7ab) [0x73c21b]
#16 smbd(main+0xbd0) [0x955f90]
#17 /lib/libc.so.6(__libc_start_main+0xdc) [0x2f24e4]
#18 smbd [0x6c6701]
[2006/09/30 14:58:35, 0] lib/fault.c:dump_core(173)
dumping core in /var/log/samba/cores/smbd


Version-Release number of selected component (if applicable):
samba-3.0.23c-1.fc5

How reproducible:
Always


Steps to Reproduce:
1. Insert, for example, any groups at smb.conf, such as valid users = @marketing
2. Everything works fine.
3. Update to samba 3.0.23c-1.fc5
4. Try to access the share containing the "@" from Windows XP
5. It wont´t access the share, altough it´s visible from explorer at Windows XP
6. Remove the "@" sign from smb.conf and replace it with the actual users from the group, separated by commas, such as "clive, celina, owen"
7. Access the share. It will work.

Actual Results:
"The share you specified is not accessible anymore"

Log files (debug level 10) available at:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=208718

Thanks a lot.
Luis Felipe