Firefox 3.0 Alpha 2 - Gran Paradiso

The first thing I did after I finished installing Gran Paradiso Alpha 2, was checking if it passes Web Standard's ACID2 test, and unbelievably it did! And I was amazed to see it really passed the test!
The release notes says the browser is now completely standards compliance. Great!
There are other improvements that affect Mac version that I haven't tested yet.