Tired to login again and again on your phpMyAdmin interface ?
You can change the default timeout in your config.inc.php file.

Add or edit this variable

$cfg['LoginCookieValidity'] = 36000; //In seconds 

The config.inc.php file is in your /etc/phpmyadmin/ folder on debian.

Some other options:

$cfg['MaxRows'] = 100; //change the number of line displayed by default
$cfg['AjaxEnable'] = false;  //enable or disable ajax 
$cfg['NavigationBarIconic'] = true;   //enable or diasable navigation icons
$cfg['PropertiesIconic'] = true;      //enable or disable properties icons