Have I read the related troubleshooter articles above before posting (which pages?)? Yes
Have I searched the tickets before posting? Yes
Have I read the documentation before posting (which pages?)? Yes
Joomla! version: 2.5.1
PHP version: 5.3.3-7+squeeze3
MySQL version: 5.1.49-3
Host: Linux Debian
Admin Tools version: 2.2.0
Description of my issue: I am trying to save my settings in Options - set Minimum release stability for update notifications to Stable.
Press Save - it reports "Configuration successfully saved", close the window, exit Admin Tools, go back to Admin tools, re-open Options and the setting is back on "Alpha".