Yeah, rightly so for some of them too.
There is one I don't get below which doesn't make sense. Though kaj posted saying it can happen which I don't disbelief, but I could re-create the problem myself with a small example. The guy who posted didn't give any explanation other than " it can potentially become null again" which means nothing much really. Kaj if you are viewing can you explain a bit more? cheers
http://www.sdnshare.com/view.jsp?id=322
Did I tell you about the multi-coloured JTable I made?