i use special chars like ampersand (&) in my password-phrases...
on update from 2.3 to 2.4, piwik will re-write the config.ini with errors.
Result: special characters (pass-phrases) in the config.ini be converted to HTML entity
on update from 2.3 to 2.4, piwik will re-write the config.ini with errors.
Result: special characters (pass-phrases) in the config.ini be converted to HTML entity