I am getting a lot of Java Heap space overflows lately. I wonder if I have a garbage collection bottleneck or a memory leak that I don't know of. Has anyone else out there had any heap space problems? It seems odd that a model with 1600 relatively simple objects is overflowing the 1GB of memory I have java parameterized for. I do have a lot of neighborhood and network creation, but it still seems like I should have plenty of memory.