so, how many of the sites mentioned here are using mod_perl apache.

Charles,
I have a client who wants to upgrade to UBB 6.05. His v5.x bbs most definitely has performance problems on a Cobalt Raq4 with 256MB RAM and a 400mhz chip, no RAID.

Seeing that you are pointing to I/O as the main issue here, could you just tell me in general whether you think v6 is going to hurt performance on a system that is already max'd out.

My advice to him was that mod_perl should provide a *significant* performance boost. Without mod_perl, I am of the opinion the server won't be able to handle to upgrade.