Recently my website has been plagued by Fatal errors (usually max execution time) in various db files (load.php, entry.php actions.php etc)
Sometimes I can upload a new .php file and the error goes away.Sometimes, I get a 500 error. And sometimes, if I leave the site alone for 30 min, it works just fine.
How do I resolve these issues? They occur daily. My web-provider tries to tell me I need to upgrade, but I know they are wrong.
Examples of errors:
Fatal error: Maximum execution time of 30 seconds exceeded in D:\Hosting\9158482\html\wp-content\plugins\quick-cache\quick-cache.php on line 42
Maximum execution time of 30 seconds exceeded D:\Hosting\9158482\html\wp-includes\load.php on line 388
Right now, the site seems to work. But it is not reliable. And the errors are varied, not contained to just one section of wp.
What can I do to solve these issues? Do I need to backup everything and re install wordpress?