Picture resizing is "slow" here, too. Slow as in any other app like this, ACDSee etc. Actually, it is even faster than others. At first, I also though that it was slower than what was presented on the keynote, but if you take a close look at the keynote, watch how incredibly slow he resizes! This is why it looks smooth. When he did it faster, it also was a bit choppy. Then again, when I saw how fast IE popped up, it showed that this clearly was a "fresh" optimized system, propably a Dual 800 with SCSI and GeForce3. I think the speed is OK, I haven't seen other apps doing it better.