Apache websites don't load in browser (php5-fpm)

Dear Community,

i Need your help,

my apache Websites dont load in Browser anymore Since i updated my debian packages ( php etc.). My imscp version is 1.1.18 and wehen i restart Apache all Work Fine some minutes and then to Websites dont load Again.

Sytem info:
debian wheezy newest version
imscp 1.1.18
error.log und acess.log from apache seems to be empty
php 5.4.4
apache 2.2.22
Dovecot // fastcgi + fpm

please help

Lg
Trimilur

I try To geht Most Info. Pls dont delete im already not at my desktop

it seems that the problem is by php5-fpm, beacuase, when i deachtivet this my websites load, but i always get an internal server error. and in my logs from php5-fpm.log stands:

[30-Nov-2014 19:00:10] NOTICE: Finishing ...
[30-Nov-2014 19:00:10] NOTICE: exiting, bye-bye!
[30-Nov-2014 19:06:20] NOTICE: configuration file /etc/php5/fpm/php-fpm.conf te$

[30-Nov-2014 19:06:20] NOTICE: fpm is running, pid 10085
[30-Nov-2014 19:06:20] NOTICE: ready to handle connections
[30-Nov-2014 19:06:22] WARNING: [pool xxx.de] server reached max_children setting (10), consider raising it.

but i dont changed my settings anytime last months and first after my updates last week i got this error

all my websites dont run when one max children was reached?! and sure ive defintly no ddos

i raised up max children and get nearly instrantly same error. but true my websites run some minutes more and then later they crashes

what the hell. the problem seems to be an fault from wordpress..... what is this...