If using latest version (6.5.0 or 6.5.1), most problem already fixed.
Doesn't need fresh install if we have a problem. Enough running 'sh /script/upcp -y' (like fresh install but with '-y'). With '-y', Kloxo-MR will be reinstall without worry data will be destroy/deleted.
Reinstall (via 'sh /script/upcp -y'), Kloxo-MR will be remove all components (like php/httpd/qmail/mysql) and then install again. Reinstall as the same as fresh install but without touch kloxo database (that mean all setting still no changed).
But, for reinstall, we need re-configure setting like select web/dns/spam server also php-branch and php-type.