Well, when I said I had no problem with the 10.4.10 update, perhaps I spoke too soon. Has anyone else using an Apple Wireless Keyboard noticed any issues with using it after installing the 10.4.10 update? I use an Apple Wireless Keyboard and Mouse with my MacBook Pro when I'm at my desk at home. I prefer using them both when I can because, well, it's just plain easier to type on a bigger keyboard, and I prefer using a mouse when possible. The wirelessness of both lets me keep my USB ports free. I didn't put two and two together initially, but I've noticed that since installing the update on my MacBook Pro, the performance on my Wireless Keyboard has degraded quite a bit. With 10.4.9, I couldn't tell the difference between using a wired keyboard and a wirelsss one, but with .10, I'm noticing the keyboard frequently lags behind my keypresses and can't always keep up (and I don't type very fast). I also noticed that every so often, my keyyyyboard will stuttttttter. A keypress will register as if I've held down the key for a while, causing the letter to repeat, even though I only gave it a quick tap. Distance shouldn't be an issue, as my keyboard is resting just a couple centimeters from the front bezel of my MBP. My battery level was registering at 88%, but I gave it fresh batteries anyway. Still no joy. The release notes indicate some bluetooth-related changes in the update, and I'm obviously wondering if this might be the cause. Does anyone know what specifically changed? The release notes don't seem to volunteer much info.