Automatically installed, yet no automatic reboots. Maybe it’s because I’ve never used the Home edition, but I’ve never had Windows force a reboot on me. Sometimes my laptop won’t wake up out of sleep mode and it reboots, but that’s about every 2 months.
The last time I was really angry about Windows was with Window Me. The entire TCP stack took a dive which I couldn’t recover from. Even replaced the NIC. Replaced that with Windows 2000 and haven’t had a serious issue since.