During installation, I chose clicked the Audit link. Everything had OK but two items. One was:

PHP:

• PHP accelerator = - WARNING (The script can be much faster if you install some PHP accelerator)

My web hosting's support is looking into the above install. Are there instructions, maybe a link, that I can refer to myself or forward to my web host's support to help with installing: PHP accelerator?

p.s. my web server is on Linux.

Thanks!