I cant deleted [[commons:MediaWiki:Watch/cs]] or [[commons:MediaWiki:Unwatch/cs]] (they duplicates the default text) or any other 'watch' or 'unwatch' message.
I receive the error "Our servers are currently experiencing a technical problem. This is probably temporary and should be fixed soon. Please try again in a few minutes."
"PHP fatal error in /usr/local/apache/common-local/php-1.17/extensions/CentralAuth/CentralAuth.i18n.php line 19527: Allowed memory size of 125829120 bytes exhausted (tried to allocate 7864320 bytes)"
"PHP fatal error in /usr/local/apache/common-local/php-1.17/extensions/WikiEditor/WikiEditor.i18n.php line 17948: Allowed memory size of 125829120 bytes exhausted (tried to allocate 7864320 bytes) "
I've deleted 374 other messages on Commons in the last few hours, so the problem seems to be specific to 'watch' and 'unwatch'.