There's probably something happening with the database when upgrading to 1.15.16, apparently even with 22.214.171.124! The lack of comment on this newly discovered issue from the joomla-crew is bothering, but I hope they are testing and trying to verify it.
The databases were not touched with any upgrade since early in the release of J1.5.x. series so your assertion is completely wrong!
Yes, I agree with you that I did an assertion in my own thread
based on my tests with fresh installs in new folders that I couldn't believe was a problem based upon the files. If that's proven wrong I beg your pardon.
Suggest rather than criticising the developers and those that have tried to help you in the multiple threads you keep posting to with the same points, you should review everything you have done so far, and follow the advice that has been provided.
I've tried to keep my problem in one thread but the first
got closed when 1.15.17 got published, and though my problem still excisted I started my own thread.
I've made som replies in other threads trying to help people with my results of testing and failures. If that's not how this forum works I'm sorry for my behavior and will keep it in mind.
I'm VERY greatful for you and all you others trying to help me! Did NOT mean to criticize you or the developers, but when I read my comment again I can see that's sure looks like it... My bad!
THEN provide precise details of what the errors are that you are receiving, precise details of all the things you have tried, details of log entries, system specification, all the extensions you have added to your system, all the core hacks you have made, template overrides and as much well presented data as you can rather than all the "tried that and did not work" comments that have been bandied around.
The developers may then be able to consider what you are reporting and come up with a solution.
Yes. I should do that. Maybe the Forum Post Assistant should be a "Must-Have" in all installations?