I can't speak for the dev team, but I have noticed a distinct trend: Apache+mod_perl is very slow with RT4.0. Lighttpd+FCGI is fast with RT4.0. Standalone PSGI is really fast with RT4.0 (but not very scalable unless you know what you're doing).
I haven't tested Apache with anything other than mod_perl, so I don't know if it's Apache-specific or mod_perl-specific. Most of the speed problems I've seen posted here are with RHEL/CentOS/SL stock httpd & mod_perl installs, so it's also possible the problem is OS-specific. (And yes, I have a ticket open to try to narrow this down; unfortunately I haven't had time to keep following up on it.) -Adam Thompson athom...@athompso.net -------- 2011 Training: http://bestpractical.com/services/training.html