The only time that I have ever seen this error:Parse error: syntax error, unexpected T_STATIC in /home2/xxx/public_html/helpdesk/include/class.plugin.php on line 110
It was because the PHP version is incorrect for 1.8.x. I would recommend dropping to a command line on your webserver and running the command:php -vIf you have more than one version of PHP installed, some times the command line version differs from the version that the web server is running. In which case you would need to make sure that your cron is pointing to a version that is 5.3+.