Hi i am facing the same problem as everybody. I installed the simple image gallery plugin for zoomla 2.5 and i am getting the message at the top of the page: "JW_SIG_PRG".

I tried to change the rights of the folder: /cache/jw_simpleImageGallery/ but the problem remains as it used to.

So could you please advice what to do???

I am posting the link to my website where the problem exists so you could check this out:
www.athlisistennisclub.gr/index.php/egkatastaseis

Please install Admin Tools from www.akeebabackup.com/ in order to fix your permissions as they should be and then reinstall the extension.

Right permissions on all joomla sites:
755 for folders
644 for files