[Puke]

well, it only happened to me once, and in 1.30 or somesuch. it was the Version when they just fixed the AIs use of stellar manip, and i was playing a max tech game with no warp points where I had sealed myself off for about 100 turns to let the computer build up forces before I came out of hiding. so they had a long time to construct whatever wierd stuff is in their build list. I have not actually checked the AI construction file to see how late in the list the stardestroyer component is, but if you have ships in the system, you do indeed get a message indicating that "such-and-such empire has exploded/imploded/ whatever-star" and that you have lost x ships and y planets.