Seg Fault with apache/mysql/php

I have tried to compile the source for mysql 3.23.27 and php 4.0.3lpl1.3 on a mandrake 7.1 linux box where apache 1.3.xx is already installed. Apache restarts ok but when I get a segmentation fault in the error_log. Now I have seen similar posts but have cannot find a solution yet. I appologise as I am not at the server now so do not have all the information at hand but I have tried various options except recompiling apache. I have removed previous mysql rpms. I read somewhere that I had to compile mysql without thread support but cannot find how to do this. I have tried configure options for mysql such as: --enable-thread-safe-client --with-phhread=no --enable-mit-thread=no For php, I have done: --with-apxs=/usr/sbin/apxs --with-mysql=/usr/local/mysql I have even tried this without mysql support but does not work. and modified the httpd.conf so there is no reference to php3. If anyone is able to help, I can supply more information I have treied this on 3 different mandrake servers one of which works. This may be mandrake 7.0 but not sure. One of the servers has apache modified for MS frontape 2000 extensions. Should mysql/php still work on this server? build into apache does mysql/php work