Joomla 3.0 Cache error shows a White Page

Problem : On Joomla 3.0, some pages show a blank white page. Refreshing sometimes renders the content, sometimes doesn’t.  Logged in users don’t have this problem, it happens only with Public view.

If you set the error reporting to Maximum or Developer level, you can see the error message is

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 15405810 bytes) in /mywebsite/pathtojoomla/libraries/joomla/cache/storage/file.php on line 141″

Solution : Set the system Cache to “None”. Disabling the system cache plugin doesn’t work.