2.06 server showing as released in WINS

[Drenning Bruce]

Running 2.06 on rh 6.1.

I've got a couple of samba servers here. One works flawlessly. The other
occasionally (every 3 or 4 weeks) will not renew it's name in the WINS
database. The only difference I can find is that the problem one is on a
different subnet than the WINS server (an NT box). When I look at the WINS
db, the lease for the samba server is showing as released (-). A smb restart
fixes the problem immediately. Anyone else have an idea why this keeps
happening?