First of all, nice job on the article. As far as multi-user mode goes, this isn't just a problem with Quickbooks 2006, but really with many previous versions as well because of Quickbooks' means of locking the database or change control in multi-user mode. The answer to this is in disabling Samba's locking on that particular share. Try disabling oplocks on that share that you're using for the Quickbooks database in order to use the multi-user mode as this tells Samba not to worry about controlling access to this share in any way so that Quickbooks will handle access only. You could even specify the lack of oplocks for just the file and not the share in general by using the "veto oplock files = " option in smb.conf. This is the reason that Samba and Quickbooks aren't automatically compatible because Samba wants to control oplocking for performance reasons in a multi-user network. Anyways, hope this helps.

Cheers,

Kyle

Miami, FL