From Monday night’s tweetstream:
As it happens, the installation of iTunes 11 reset some of the play counts on some of my purchased tracks, and it appears I’m not alone.
Many of the thread participants blamed the crossfade feature; I’m not using it, so that can’t be the only issue.
And it hasn’t really affected my Randomator playlist, which shuffles the 700 tracks least recently played, because the last-played date is still correct, even if the play count is blacked out. (Regular readers will note that this is yet another increase in the playlist size, which I try to keep at around one-tenth of the total library.)
Curiously, the reset seemed to affect only tracks purchased from iTunes; it did not affect tracks bought elsewhere, or material I ripped at home.