KrXBug 1. Function where wp-config.php gets changed.
Function will replace <b>all</b> instances of $GLOBALS['table_prefix'], even if value it is replacing is not $table_prefix = 'foobar';
e.g. New prefix: "foo". If the username is <i>define('DB_USER', 'wp_');</i> (happens to be <i>wp_</i>), the username will also be changed to "foo".
(Line 141 of database.php)
Suggestion: make criteria for <i>str_replace</i> include: <i>$table_prefix = '</i> and <i>';</i> like:
$table_prefix = 'kwapc_';
$line = str_replace("$table_prefix = '".$GLOBALS['table_prefix']."';", "$table_prefix = '".$newpref."';", $line);
Bug 2. MySQL: Table wp_usermeta's whose meta_key value == "wp_capabilities" and "wp_metaboxorder_dashboard" do not get changed into the new prefix values.
This causes Wordpress to output errors like "You do not have sufficient permissions to access this page.", especially in administration pages.
