Sounds like theyve turned hermie (means theyre both male and female... think Michael Jackson, but in MJ terms. Hey - is that a coincidence? Michael Jackson - MariJuana? Hehehe).
Anyway, Id love to have a hermie plant. It means that it will still produce smokable buds, but they will be slightly lower in THC because some of the THC is used in making the seeds. However, the plant will pollenate itself, meaning you get bud AND seeds!
Oh, by the way, I think that seeds from a hermie plant will always turn out hermie, but Im not too sure on that.