[Samba] server or client having the problem?

[rhubbell]

Hello,

Running client on 
redhat4 version 3.0.28-0

and the server on 
Solaris 10 version 3.0.25c

Writing 2-3megabytes/second.

Something stopped working.

On the client I ran strace against the mount.smbfs process:

It showed 
pause(

On the server all I saw was this:
[2008/11/30 14:14:43, 1] smbd/service.c:(1230)
192.168.1.200 (192.168.1.200) closed connection to service smbmnt

Can't strace smbiod on the client and can't find the man page for it and
I can't send signal 11 to try to get a core.

I'm just running this instead of NFS, would CIFS be a better choice
here?