Apache, libmm und PHP4: PHP Fatal error: Unable to start session mm module in Unknown on line 0

[Berthold Cogel <cogel@rrz.uni-koeln.de>]

Hello!

We have a System Debian stable/testing/unstable that we use for 
development and education.
Each user on this machine can start his own Apache with PHP4, his own 
MySQl and Tomcat.

Versions:
Apache 1.3.27.0-1
PHP4   4.2.3-14
libmm  1.3.0-1

To get this System running I had to build libmm from source package with 
'--with-sem=IPCSEM' so that each user could use PHP4. Otherwise I run 
into problems with the permissons of the files session_mm_apache0.mem 
and session_mm_apache0.sem in /tmp. This was the way I did this so far. 
I'm open to a better solution.

Problem:
Since the last update of the machine I get this message during startup 
of apache when called from a non-root user:

PHP Fatal error:  Unable to start session mm module in Unknown on line 0


This message is similar to the errors I got before I started to build my 
own libmm. It seems that there is a general problem with libmm or PHP4 
at the moment, because rebuilding with '--with-sem=IPCSEM' doesn't help 
anymore.

Which options do I have when I want to run multiple apaches with PHP4 on 
one machine?


Berthold Cogel