Premature end of script headers: index.php (no replies)

using latest piwik version, anyway widget contents arent loaded anymore, instead a message that the server is overloaded is shown, within php error log the following output:

Premature end of script headers: index.php, referer: piwik/index.php?module=CoreHome&action=index&date=today&period=day&idSite=14

I already searched the forum for this but couldnt find a fix for this - anyway after digging deeper, I found this in the logs:

[Thu Nov 13 06:19:36 2014] [error] mod_fcgid: process /home/htdocs/conf/php5/php-fcgi-starter(16728) exit(communication error), get unexpected signal 11
[Thu Nov 13 06:19:36 2014] [error] mod_fcgid: process /home/htdocs/conf/php5/php-fcgi-starter(16727) exit(communication error), get unexpected signal 11

please help,
thx