Hello,
Have you guys at Invision played around with http://sphinxsearch.com ???
I've found it interesting but I do not know the innards of IPB well enough to adapt it to my forum.
Maybe you can post a step by step tutorial here how to adapt http://sphinxsearch.com for IPB 2.1.6
http://sphinxsearch.com can use both MyISAM and InnoDB.
Imagine: Full Text Search on InnoDB (row locking) !!!
Wow! Wow! Wow!
Please help me install this thing.