I just tried it with 2.74, because that version was reported earlier in the thread by someone who said that they don't have the problem.

I get the exact same drift in 2.74 as in 2.90. And, as was just said, someone else gets the problem in version 5.

So it's beginning to sound like it's not a specific Winamp bug. Or, if it is, at least it's a bug that's been consistent across versions.

Wish I knew what was causing this...