More info...
This is the part I don't understand. I just created a new library, on C:, and imported a ton of mp3's from my OLD archived library. I used to use iTunes (ending around July 2006) until I switched to Media Center. I was smart enough to save my old collection of MP3's even though I switched to 100% FLAC. The old collection was not crystal clear and had many errors, incomplete data, and other issues. But the point is that with this collection, MC is literally instantaneous. Clicking one of those pane items comes up in well under 1 second.
Just wondering if it might be all the network access, which could partly be due to Vista's horrible access (network wise)...that makes me think, though. My other XP computers, are also slow with MC but reasonably fast computers. That shouldn't be network related since XP doesn't have that issue. Any explanations would be greatly appreciated.
I'll be honest: I really like the instantaneous MC thing...I'd like my FLAC music to have that...
Although this quick create library has 8K MP3's and that's it. My other collection had 13K FLAC with lots of images and video totaling 30K items.