Someone wrote:
We're trying to migrate RHEL3 and CentOS4 based samba servers over to CentOS5, but it's a bleeding disaster. We cannot get it to work reliably with any version of CentOS5, i386 or x86_64, the included 3.0.x version of samba or 3.4.x/3.5.x compiled from source.
<snip> Here's a question: are you using your old configuration files? You might want to compare the default from the install with the old ones - there may be deprecated or defunct or invalid options.
mark