[Samba] 3.0.21b: smbmount hangs

[Joe Feise]

I compiled Samba 3.0.21b with options
$: ./configure \
	--with-smbmount \
	--with-automount \
	--sysconfdir=/etc \
	--with-configdir=/etc \
	--with-quotas \
	--with-mysql-prefix=/usr/local/mysql \
	--with-winbind \
	--with-utmp \
	--with-acl-support \
	--with-aio-support \
	--with-python=/usr/bin/python
$: make && make install

I found that smbmount hangs. It mounts fine, I can access the mounted drive, but
it doesn't terminate.
$: smbmount //192.168.0.10/c$ /W2K-C/ -o debug=4,ro,credentials=/etc/w2k
opts: ro
opts: credentials=/etc/w2k
mount.smbfs started (version 3.0.21b)
added interface ip=192.168.1.1 bcast=192.168.255.255 nmask=255.255.0.0
added interface ip=127.0.0.1 bcast=127.255.255.255 nmask=255.0.0.0
Connecting to 192.168.0.10 at port 445
6682: session request ok
6682: session setup ok
6682: tconx ok
namecache_shutdown: Couldn't close namecache on top of gencache.
[hanging here]

192.168.0.10 is the endpoint of a ppp link.

This worked fine with 3.0.20.
The machine runs Slackware 10.2 with kernel 2.6.16-rc1-mm4.

-Joe