[Samba] smbfs pc-netlink problem

[Rob Brenart (TT)]

I posted basically this problem yesterday with no response, but I have some
new information so here's a rego.
 
I mount a solaris box which is sharing files with pc-netlink

I use the following line in my fstab
 
//machinename/Share /mnt/machinename/share smbfs
credentials=/etc/fstabpwds/username,ro,user 0 0
 
And it mounts fine, I can access all the directories, and most of the files.
 
Some of the files however are problematic. Namely, I can't copy them or open
them or use them in anyway. If I try to cp them, the process never ends and
the resulting file grows until it takes up all the space on the destination
drive.
 
If it's a text file, and I try to cat it, the process hangs.
 
An ls -l of the file does show the proper file size.
 
I have smbfs 3.0.10-1 installed.
I'm running 
Linux version 2.6.8-1-386 (joshk at trollwife) (gcc version 3.3.5 (Debian
1:3.3.5-2)) #1
 
Connecting to the same share via a 
Smbclient //machinename/Share
 
Allows me to navigate to, and get the files just fine.
 
Accessing these shares from Windows boxes works just fine.
 
I'm completely stumped, and this is a show stopper for rolling out a new
server, so if anyone has any ideas, please let me know.