[eAccelerator] Can not create shared memory area in Unknown on line 0

I just transfer one of the subdomains I have to the new server (ispconfig 3) and get

Code:

[Mon Jun 07 05:48:51 2010] [error] [client 78.157.11.209] PHP Warning:  [eAccelerator] Can not create shared memory area in Unknown on line 0
[Mon Jun 07 05:48:51 2010] [error] [client 78.157.11.209] PHP Fatal error:  Unable to start eAccelerator module in Unknown on line 0
[Mon Jun 07 05:48:51 2010] [error] [client 78.157.11.209] Premature end of script headers: index.php

Code in background is Codeigniter. It works perfect on old server (ispconfig 2).

 

How did you install eAccelerator?

 

You can find more info about this at: http://eaccelerator.net/wiki/Faq