id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
14397	slow sql query from probably is_blog_installed	mark-k		"When everything else fails, is_blog_installed uses 
$tables = $wpdb->get_col('SHOW TABLES');
which can be costly in a big multisite or even when you have many single installations on the same DB

Related question - why does is_blog_installed is even being called on wp_widgets_init()? I would assume that if the DB is not set properly not only the widgets will suffer but also the themes and the plugins which are not protected at the same way."	defect (bug)	new	normal	Future Release	Performance	3.0	normal		has-patch 2nd-opinion	mark@…