Is there a way in Altiris for a computer record field to be ‘locked’ for ownership of that computer record, regardless of who logs on to it? In other words, my laptop was assigned to me and Altiris reflects that. But, if I loan it out to someone else and that person logs onto it, that record now gets ‘over-written’ with his/her logon info, and erroneous ownership.
Is there a record field that can be used/reserved/created for the true ownership of that computer, a field that can only be manually changed/updated?
You can disable the task "Assign Computers Ownership to be the Primary User", this is what automates that assignment. With that disabled you can manually change the Asset Owner or if you have a spreadsheet that contains them you can set the ownership by a connector rule.
Another option would be to create a custom Association to keep track of the owner as well.