Apache error [emerg] (38) Function not implemented: couldn't create accepte lock

["debian" <debian@searo.be>]

Hello,

I still have problems with apache 2.
I installed 2 new identical servers and i have the same error on both
when trying to start Apache:

[warn] pid file /var/run/apache2.pid overwritten -- Unclean shutdown of
previous apache run ?
[emerg] (38)Function not implemented: Couldn't create accept lock 


The first error is probably because when i start apache, i quits
directly and that fault must be the second error but i have not idea
what it means.

My kernel is 2.6.13.4 and apache version is 2.0.55
Apache is installed with apt-get.


Could this be kernel related or just apache related ?
I never had problems like this before when installing apache.

Grtz,
Verus