You're perfectly right, I kinda forgot about it, but I *do have*
sqlite3 installed from the ports, and it was compiled without threads.
Yes, exactly, it's what I have suspected by look at -I/-L. I will
waiting for ahze or someone to answer back for why not use sqlite port
instead. If there is problem with sqlite port vs firefox3, then I will
have to fix the -I/-L in firefox3's sqlite.
Update: this happened also after I re-compiled my sqlite3 port to
include threads support, on my i386 6-STABLE.
Second update: it happens also *without* the sqlite3 port installed.