[BuGfiX]

Взято из man smb.conf:

Код:

 os level (G)
 
     This integer value controls what level Samba advertises itself as for browse
 elections. The value of this parameter determines whether nmbd(8) has a chance
 of becoming a local master browser for the workgroup in the local broadcast area.
 
     Note :By default, Samba will win a local master browsing election over all Microsoft
 operating systems except a Windows NT 4.0/2000 Domain Controller. This means
 that a misconfigured Samba host can effectively isolate a subnet for browsing
 purposes. This parameter is largely auto-configured in the Samba-3 release series
 and it is seldom necessary to manually over-ride the default setting. Please refer to
 chapter 9 of the Samba-3 HOWTO document for further information regarding the
 use of this parameter.
 
     Default: os level = 20
 
     Example: os level = 65

В общем, попробуйте поставить os level побольше.