When I first got my iBook two years ago, I always connected and disconnected USB and other devices while the Book slept. And several times weird things happened. Then there was a thread on this list that concluded that you were supposed to hot-swap only when the machine was awake, so that it could make the necessary adjustments on the fly. I started hot swapping only when awake (me and the machine) and haven't had a problem since. In fact, I vastly prefer it this way because most times you want to hot swap you're actually using the computer. I thought it was more of a pain to put the book to sleep in order to swap devices. Brian On 2/12/04 6:14 AM, "Glenn R. Fong" <fongg at t-bird.edu> wrote: > I get kernel panics if I hot swap > video connections while in Panther sleep. I stuck with 0S 9 until only 6 > months ago, and had no such problems.