I got constantly errors on my gallery webpages > f.e. see http://www.publik-antwerp.be/ploggerb3/publik_antwerp/11_04_2009 Everything seems to work fine ...
You can disable these by opening plog-globals.php and entering the following code at the top below the session code: error_reporting(E_ERROR); or error_reporting(E_ALL & ~E_NOTICE); Both of these settings will suppress the notice errors (but still show any fatal errors or warnings).
Please note that we have tried hard to clean up these notices for the next release as well, so it should not matter what your error_reporting level is set at.