Can't change any settings after upgrade from 14.10 to 15.04

[Markus Mad]

I can't change any setting any more after doing the upgrade from 14.10 to 15.04.

My panel went to default, I changed the displayed clock to show, day, and seconds, etc...Doesn't accept it any more.
My customized starters on the left panel are gone.
Same with rhythmbox, no customisation possible, if I enable something it immediately goes back to (I guess) default
Also have the problem that my default keyboard language get's changed as it is already written in release notes, with the additional problem that i even can't change it temporarily.

Can someone help me?

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1448422/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Paul White (paulw2u)]

Thank you for reporting this bug to Ubuntu. The 15.04 reached EOL on February 4, 2016.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases

If the bug is still reproducible with a currently supported release then please advise.

[Launchpad Janitor (janitor)]

[Expired for Ubuntu because there has been no activity for 60 days.]