Groups problems

[Shaun Friedle]

Hi,
I seem to have a weird problem with groups, it seems like the system
doesn't notice that I am in certain groups when it comes to file
permissions, and if I run groups or id with no arguments it also has
some groups missing from the list, but with my username as an argument
it is complete. I've never encountered this before, does anyone know
what the problem might be?

[shaun at strange] ~ $ ls -lh /tmp/group_test
-rw-rw-r--  1 www  mercurial     0B  4 May 14:08 /tmp/group_test
[shaun at strange] ~ $ echo test > /tmp/group_test
bash: /tmp/group_test: Permission denied
[shaun at strange] ~ $ whoami
shaun
[shaun at strange] ~ $ grep shaun /etc/group
wheel:*:0:root,shaun
www:*:80:shaun
shaun:*:1002:
svn:*:1004:svn,shaun
mercurial:*:1006:shaun,www
[shaun at strange] ~ $ groups
shaun wheel svn
[shaun at strange] ~ $ groups shaun
shaun wheel www svn mercurial
[shaun at strange] ~ $ id
uid=1002(shaun) gid=1002(shaun) groups=1002(shaun),0(wheel),1004(svn)
[shaun at strange] ~ $ id shaun
uid=1002(shaun) gid=1002(shaun)
groups=1002(shaun),0(wheel),80(www),1004(svn),1006(mercurial)

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Thanks,
Shaun Friedle