Problem with Joomla..please help

[medphoenix]

my website is medgameplanet.co.nr . I'm running Joomla CMS. So far it has worked properly,
but nowadays frequently the main page showing a messege
"this page is offline - could nnot connect with data base"
sometime I could access the website without any problem.
In cpanel, MySQL is ok without any errors, then
where would be error with connecting to the database?
this is the error.....Please help me to findout the error:dunno:

[Livewire]

Is the database server set to mysql.x10hosting.com, or did you not change it after they moved servers a week or two ago (it's been this way for a while; if you still have it set to localhost, it ain't going anywhere).