Will upgrading to Aperture 3 fix my broken Aperture 2 libraries?

I [switched to Lightroom from Aperture](/journal/2009/10/31/why-i-am-switching-to-lightroom-from-aperture-2/) 8 months ago, and I have since been enjoying using a product that just works. However, I do still have tens of thousands of images with metadata trapped in an Aperture library that explodes when I open it.

I just kicked off an Aperture 3 upgrade to see if my library is fixed during the upgrade. It's been at 2% for 20 minutes now. We'll see what happens.