Megawizard FIFO problem: Write and read request filling FIFO!

Well this is a nice coincidence, but I just talked to someone else who was seeing something similar. They were doing constant writes(no reads), and their write counter which was incrementing suddenly started decrementing. What device are you targeting and what version of Quartus.

I looked at the design a little closer today and there are some other issues around it, i.e. lots of logic is getting synthesized out around the FIFO, which causes logic in the FIFO to get removed(it doesn't even use a memory block). So I think something else is causing it to act "funny", but we haven't narrowed it down yet. Does logic get removed from your FIFO or does it all seem to be intact? Does it use the right amount of memory blocks?