I ran into a serious problem when saving a somewhat larger menu in a project of mine. This menu has around 80-90 items and 2 levels of items. When i'm saving this menu it takes around 60 seconds to end up with an application 500 error.
From the error-logs i can deduce this error:
[Mon Apr 23 13:54:16 2012] [error] [client xx.xxx.xx.xxx] PHP Fatal error: Maximum execution time of 0 seconds exceeded in /var/www/vhosts/www.example.com/htdocs/wp-content/plugins/wpsearch/WPSearch/Backends/Phplucene/Zend/Search/Lucene/Index/SegmentWriter.php on line 457, referer: http://www.example.com/wp-admin/nav-menus.php
So... what is going on here??
I've disabled the WPSearch plugin (126.96.36.199) and my menu is saving fine again in under 10 seconds.