semiphore timeout expired error

[TPsmith at ixl.com]

I have a  Samba 2.7 running on a Solaris, and things will be fine, and then
all of a sudden, it's not working and when I try to connect to the samba
share I get a, "semiphore timeout..." error.   And then after a day or
sometimes just hours, it fixes. 
The inconsistency is making it hard to role out a Unix server of ours to
compete with a Windows server. Any ideas?
 
T. Paul Smith
Sr. Systems Engineer
iXL, Inc.(Atlanta)
404-267-7873
tpsmith at ixl.com <mailto:tpsmith at ixl.com>