I posted on d.o here:

http://drupal.org/node/338952

about a serious problem that has come up on a Drupal 5.12 site which I work on. No has yet had any response to my post there, so I wanted to ask here also. I will not repeat the text of my post, as it's not short.

If anyone could take a look at that post and share any thoughts, whether here or there, I would appreciate it.

Thank you, Hershel