i upgraded one of my server from 126.96.36.199 (maybe nightly) to 188.8.131.52 and i've got an error:
[ WARNINGS ]
Servers::httpd::apache_fcgi::stop: [Fri Jan 20 16:05:11 2012] [warn] VirtualHost xxx.xxx.xxx.xxx:80 overlaps with VirtualHost xxx.xxx.xxx.xxx:80, the first has precedence, perhaps you need a NameVirtualHost directive
[ ERRORS ]
Servers::httpd::apache_fcgi::disableSite: stderr ERROR: Site default does not exist!
iMSCP::Debug::END: Exit code is 1!