I just want to reiterate what glandium wrote in a comment further down:
"He didn't step down. He's taking a break. It's not the first time he takes a break either. Let's not be too alarmist."
"He didn't step down. He's taking a break. It's not the first time he takes a break either. Let's not be too alarmist."
I do agree that it's somehow worrisome, but I tend to think that open discussion, and slowing down is a sign of health rather than the opposite. Time will tell.
Time will tell how things will change in the Linux development world, but on a personal level, I think it is kind of admirable to face such an issue and be so open about it.