What about you max number of ships/units. I ran into something similar one time, when I didn't change it to 2000. Left it at one hundred, then suddenly realized that I couldn't build anything anymore...no more mines, ships, etc.
No sorry, The most recent time I had it I was about 15 turns into the game, and it was only about my 5th warship, with about another 10 or so incidental ships (not counting used colony ships)
Note that cancelling the queue and reentering the items restarts it in each instance.
[This message has been edited by Griffin (edited 27 November 2000).]