mysql prompts to upgrade to 5.5 and above solutions
I went to /usr/share/phpMyAdmin/libraries/common.inc.php and comment out this lines:
#if (PMA_MYSQL_INT_VERSION < 50500) {
# PMA_fatalError(
# __('You should upgrade to %s %s or later.'),
# array('MySQL', '5.5.0')
# );
#}