[Samba] guest problems

[Terry ( 1stKMH )]

Hi the below config has worked fine in the past but is giving me 
problems now

[global]
       netbios name=server
       workgroup=workgroup
       encrypt passwords=yes
       security = share

[homes]
       comment = Home Directories
       read only =no

[publicshare]
       path=/usr/share
       read only = No
       guest ok = Yes
       browseable = yes

when i map the homes share and connect using a username / password it 
shows me all of /
this is samba-3.0.25a_1,1 fbsd 6.2
The public no login share works fine
Thanks
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