PHP binary causes Segmentation fault

HI there, I am trying to install php 4.3.6 on a Redhat 7.0 system. I downloaded the source, unpacked and ran this configure command: ./configure --prefix=/usr/local/ --with-config-file-path=/usr/local/lib/ --with-gd --with-jpeg-dir --with-png-dir --with-tiff-dir --with-ttf --enable-force-cgi-redirect --enable-safe-mode --with-zlib --enable-ftp --enable-versioning --enable-url-includes --enable-gd-native-ttf --enable-trans-sid --enable-dbase --with-db2 --with-ldap --enable-bcmath --enable-calendar --enable-discard-path --enable-memory-limit --with-imap --with-mcal --with-bz2 --with-mod-dav --enable-sockets --with-kerberos/--with-imap-ssl --enable-gd-imgstrttf --with-freetype-dir --with-curl --with-apxs --with-mysql --with-mhash --with-gdbm --with-pgsql --with-gettext --with-xml --with-mcrypt Everything looks fine. I then make and make install with no errors. If I restart apache and check phpinfo everything is fine and php is updated to new version. The only problem is when I try to use the php binary I get "Segmentation fault (core dumped)". I managed to work out that if I remove --with-gdbm --with-pgsql from my configure, the binary executes with no problems. I still have a problem because I do need these options enabled. Any help would be much appreciated, I am not sure where to look. Thanks, Darren