Segfault on Apache2 (Debian 7.3)

[Jelle]

Hi,

My first Kolab install was on a Xen DomU and there Apache crashed about
once a day with this error:
*[Sun Dec 29 06:25:07 2013] [notice] seg fault or similar nasty error
detected in the parent process*

Now I have Kolab installed on a dedicated server (same release; Debian 7.3)
through the default install method on
http://docs.kolab.org/installation-guide/debian.html

The install went great, but Apache still crashes with the same error. :S
Any idea or experience with this?
Thanks!

- Jelle
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