I think what mac is talking about is the bugfix to the old "runaway" bug, which I think is what "buttonfix" was supposed to take care of.
Beta 11 is a different piece of player software, and the volume speed was altered in that release. That's what you're noticing. It's unrelated to the buttonfix upgrade. So if you already applied buttonfix, then you're already properly upgraded and don't need to worry.
Until now, I wasn't going to mention the change in volume speed. No need to throw gasoline on a fire.
Hey, Mike. Since I'm running the 10a non-buttonfix kernel at the moment, are there any other potential problems between having a 10a kernel cohabitating with an 11 player?
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Tony Fabris