Same here.
I am ripping a whole bunch of CD's. I insert one, it looks it up and I rip it. It spits out the CD, I click away the previous rip dialog and close the riplog. I insert the next, and either one of three things can happen:
1. It loads the previous CD title and tracks
2. It doesn't load anything (no tracks, as if there is no CD)
3. It loads the correct info.
It seems completely random but when 1 or 2 happens most often, I have a very hard time to get MC to recognize the CD. I eject it, close MC, insert the CD and watch Windows Explorer to recognize it, open MC and it just comes back with whatever it detected before closing.
It seems like a caching issue.
I'm having this issue with almost any CD change. Option 3 rarely happens.
For now I installed EAC just to see if it has the same issues. EAC picks the correct CD tracks and downloads the right track info. Even after EAC loaded it, MC refuses to see a CD change.
Let me know if you need anything. I can make a debug log and upload it.