Yeah, that's what I thought, too... only it's not getting its settings from there. I've tried changing several, and no joy.
rubs eyes Ah... I could have sworn it was off by default. At any rate, I'd still really like to get the custom installation working, as I'm trying to add GMP support in to allow for a nice public-key encryption module down the road.
As a side note, even though php_info() points to the directory, it still works fine even if php.ini is removed from the directory. Talk about odd...