Hi, We are using OTRS 2.2.5 with a MySQL Backend with 4GB of RAM and Xeon 3.06 GHz CPU. Linux Distribution is the latest CentOS 5.1 with kernel 2.6.18-53.1.21.el5 #1 SMP. OTRS is running on Apache httpd-2.2.3-11.el5_1.centos.3 with mod_perl-2.0.2-6.3.el5 and perl-5.8.8-10.el5_0.2 and is having about ~ 4000 tickets in database with 300 customer companies and about 700 customers. Apache and MySQL were tuned the best I can to improve general performance and response time. With all these software and hardware related things, OTRS is by far too slow, overall navigation on the Agent AND Customer interface is slow ( response times of about 1 to 2 seconds for paged display). At this moment, I have no clue/idea about how to make it faster, I would like to try some sort of debugging with tool like Fred but didn't find any documentation how to implement it and makes it work ? By the way, I tried to disculpt some of the component by doing some tests with other software : Apache and MySQL does not seem to be the problem as other PHP applications running on the same server are running fast and smoothly. If anyone is having some ideas or advises on how to debug/find a solution to this problem, I will be glad to read your answers and share OTRS experience with any of you. ./otrs.checkModules CGI ... ok Date::Pcalc ... ok Date::Format ... ok DBI ... ok DBD::mysql ... ok Digest::MD5 ... ok Crypt::PasswdMD5 ... ok LWP::UserAgent ... ok IO::Scalar ... ok IO::Wrap ... ok MIME::Base64 ... ok MIME::Tools ... ok Mail::Internet ... ok Net::DNS ... ok Net::POP3 ... ok Net::LDAP ... ok Net::SMTP ... ok Authen::SASL ... ok GD ... ok GD::Text ... ok GD::Graph ... ok GD::Graph::lines ... ok GD::Text::Align ... ok XML::Parser ... ok PDF::API2 ... ok Compress::Zlib ... ok Thks by advance. Best regards Laurent MINOST