My Raspberry Pi Reboots on plugging in some USB devices. I do not think it is a power supply problem - I am using a 5v 30A power supply (ATX SMPS) and I have see it occur across two OS releases - (debian & Raspbian).
The devices I have used are EDiMAX WiFi dongle and RTL2832 USB dongle. Plugging in these device before booting works just fine.
What might be the reason for the reboot and how do I avoid it?