Shmuel Lewitan wrote:

Good Afternoon, I am running MediaWiki: 1.15.1, PHP: 5.2.6 (cgi-fcgi), MySQL: 5.1.25-rc

My system is core dumping my error logs the past three times give the same error: php-cgi[12645]: [ID 800047 user.notice] PHP Warning: array_map() [<a href='function.array-map'>function.array-map</a>]: An error occurred while invoking the map callback in /intra/htdocs/wiki/includes/Title.php on line 1378

dr--r----- 2 webservd webservd 512 May 13 15:48 core_12133 dr--r----- 2 webservd webservd 512 May 14 15:57 core_28113 dr--r----- 2 webservd webservd 512 May 15 16:06 core_12645

Core dumping doesn't usually mean an error log. If your web server/php is really "dumping core", that's a bug on your web server / php

2010/05/13 15:51:26.946 EDT 10.100.2.103 May 13 15:48:15 php-cgi[12133]: [ID 800047 user.notice] PHP Warning: array_map() [<a href='function.array-map'>function.array-map</a>]: An error occurred while invoking the map callback in /intra/htdocs/wiki/includes/Title.php on line 1378 2010/05/14 16:00:39.949 EDT 10.100.2.103 May 14 15:57:27 php-cgi[28113]: [ID 800047 user.notice] PHP Warning: array_map() [<a href='function.array-map'>function.array-map</a>]: An error occurred while invoking the map callback in /intra/htdocs/wiki/includes/Title.php on line 1378 2010/05/15 16:09:53.315 EDT 10.100.2.103 May 15 16:06:40 php-cgi[12645]: [ID 800047 user.notice] PHP Warning: array_map() [<a href='function.array-map'>function.array-map</a>]: An error occurred while invoking the map callback in /intra/htdocs/wiki/includes/Title.php on line 1378

Does it happen if you disable mediawiki extensions?

While I was trying to find some solution I discovered 3 other sites which seems to at sometime have had this error: http://www.google.com/search?num=50&hl=en&newwindow=1&safe=activ...

Many sites show that error: http://www.google.com/search?q=%22An+error+occurred+while+invoking+the+map+c...

The php message is not too specific. Take a look at http://www.mediawiki.org/wiki/Manual:How_to_debug