Bill the Lizard #10

"One of those asteroids was Iridium rich. A real find. So an AI controlled tug was sent to retrieve it.
While it was en-route, there was a coronal mass ejection, a flare, from the sun. The tug was struck by it, and the onboard AI was woken from its sleep mode. The tug AI's were creative. They had to be, to deal with the unexpected.
By the time we knew about it, it was already insane. We tried to issue a reset, but it took that as an attack. It was already returning, so... It altered trajectory, and crashed."