I have a couple of Joomla 3.3.6 websites, and suddenly this morning I started to get random error messages, like this:
Error displaying the error page: Application Instantiation Error: Unknown storage engine 'InnoDB' SQL=DELETE FROM `#####_session` WHERE `time` < '1414616481'
and this:
Error displaying the error page: Application Instantiation Error: Unknown storage engine 'InnoDB' SQL=SELECT `session_id` FROM `#####_session` WHERE `session_id` = '5e5f2d5ee6daf15c2740e3e211a27941' LIMIT 0, 1
Is it possible that my websites have been hacked? These are live websites, and I haven't made any changes (not even visited the admin area) for weeks.