I had to change the IP scheme of my network. I have changed the interfaces, hosts and koha.conf files to reflect the new IP. When I try to access Koha by typing http://koha.domain.com:8050 I get a 500 internal server error. My opac-error_log file says: Thu May 08 21:24:58 2008] [error] [client 72.227.31.7] DBI connect('Koha:10.0.250.4','kohaadmin',...) failed: Can't connect to MySQL server on '10.0.250.4' (111) at /usr/local/koha/intranet/modules/C4/Context.pm line 411 [Thu May 08 21:24:58 2008] [error] [client 72.227.31.7] DBI connect('Koha:10.0.250.4','kohaadmin',...) failed: Can't connect to MySQL server on '10.0.250.4' (111) at /usr/local/koha/intranet/modules/C4/Context.pm line 411 [Thu May 08 21:24:58 2008] [error] [client 72.227.31.7] Can't call method "prepare" on an undefined value at /usr/local/koha/opac/cgi-bin/opac-main.pl line 16. [Thu May 08 21:24:58 2008] [error] [client 72.227.31.7] Premature end of script headers: opac-main.pl The Koha database is located on a different server that also received a new IP address. Can anyone help me determine what configuration step I have missed. I should also mention I am fairly new to Linux and Koha. Thanks for the help