Is there realy a need to re-seed a random number generator after a certain number of rand() calls if it is initially seeded with the time? It would seem to me that it should produce psedu random numbers forever, and the only way to duplicate those would be to seed it with the same exact number(the time) again. However, I recently heard that the generator "goes stale" and that it is a good idea to re-seed after a certain number of calls. Any thoughts on this?

No, it''s not necessary.