First of all try to troubleshoot it with help of article http://kb.parallels.com/111283
Contact Support Team if you are not familiar with Linux administration.
Could not open Repository at "/etc/sw/keys": Cannot open file
[Fri, 14 Sep 2012 12:39:48 +0200] ! 0 Unable connect to database: get_admin_password() fa
iled: file_get_contents() failed:
/etc/init.d/courier-imap restart
/etc/init.d/courier-imap: 192: .: Can't open /etc/courier-imap/imapd
$ $
Perl enabled
Awstat enabled in domaine... but don't work
What exactly "does not work"? I have asked you show output of commands. Have you tried them?
Contact Support Team if you are not familiar with Linux administration.