I'm glad it worked out for you. Sounds like a strange problem.

I've looked at both Js Jobs and JP Jobs. Neither of them contain any references to Jobline. From the looks of it, they're rather well written native Joomla 1.5 components which don't have anything to do with Jobline.

So the mysterious appearing job is a bit hard to explain. Jobline doesn't remove old jobs during deinstall though, so if you've used it at some point in the past, that could be the explanation.