Problems after update to Plesk 12.0.8

[MaxSchmidt]

PS: Plesk 12.0.18

Hi all,

sorry for my English, i hope anybody can help me.

Yesterday evening everything worked. Since this morning Plesk is very slow. It needs up to 10 minutes for opening. Several websites are unobtainable.

/usr/local/psa/admin/sbin/httpdmng --reconfigure-server
and
/usr/local/psa/admin/sbin/httpdmng --reconfigure-all
make just nothing

In Apache2-Log i found this:

[error] python_init: Python version mismatch, expected '2.7.2+', found '2.7.3'.
[error] python_init: Python executable found '/usr/bin/python'.
[error] python_init: Python path being used '/usr/lib/python2.7/:/usr/lib/python2.7/plat-linux2:/usr/lib/python2.7/lib-tk:/usr/lib/python2.7/lib-old:/usr/lib/python2.7/lib-dynload'.

this:

[warn] RSA server certificate CommonName (CN) `Parallels Panel' does NOT match server name!?

and this:

[error] [client 90.156.153.25] script '/var/www/vhosts/default/htdocs/index.php' not found or unable to stat
[error] [client MY.IP] script '/var/www/vhosts/default/htdocs/index.php' not found or unable to stat
[error] [client MY.IP] script '/var/www/vhosts/default/htdocs/index.php' not found or unable to stat
[error] [client MY.IP] script '/var/www/vhosts/default/htdocs/index.php' not found or unable to stat
[error] [client MY.IP] script '/var/www/vhosts/default/htdocs/index.php' not found or unable to stat
[error] [client MY.IP] script '/var/www/vhosts/default/htdocs/index.php' not found or unable to stat
...
...
...

Thanks in advance