|Jun, can't say for sure about your Sun, but in my experience, any PS2 connection can cause problems when disconnected in a power on condition, but I seriously doubt it would cause a problem severe enough that a restart won't fix. Never has with me anyway. |
Only USB connections seem to be relatively trouble free when it comes to a dis/reconnect while in a booted condition. At least that's been my experience.
I know that isn't much help, maybe someone with a Sun that's tried that will chime in.