Hello word, It's impossible to install ispconfig 2.2.15 on archlinux Don' T Panic with apache2 and php5. The following error occurs: Signature Algorithm ((R)SA or (D)SA) [R]: ______________________________________________________________________ STEP 1: Generating RSA private key for CA (1024 bit) [ca.key] 82270 semi-random bytes loaded Generating RSA private key, 1024 bit long modulus ........++++++ ......++++++ e is 65537 (0x10001) ./support/mkcert.sh: line 140: 3274 Instruction illégale $openssl genrsa -rand $randfiles -out $sslkeydir/ca.key 1024 mkcert.sh:Error: Failed to generate RSA private key make[1]: *** [certificate] Erreur 1 make[1]: quittant le répertoire « /root/Net-Ident-1.20/install_ispconfig/compile_aps/apache_1.3.37/src » make: *** [certificate] Erreur 2 ERROR: Could not make certificate for Apache I followed the following instructions: http://wiki.archlinux.be/installation_de_ispconfig_avec_apache_1.3.37_et_php_4.4.6 Thank you for your assistance.