Just want to say there is defenitely a renderspeed increase in 2.46.
I upgraded from 2.44 and now loaded a simple test scene i did and the speed has doubled.I can’t give exact numbers as i deleted the older version already but first it was about a minute and now 26sec.
The scene is with Suzanne and HDRI in Yafray size 720x567.
iMac G5 1.8ghz.