> > Is the -#L1,000,000,000 an issue here? 
> I have pretty much proven to myself that it was the
> culprit for the memory use. 

Are you REALLY going to mirror a Billion links? If each page averages 50KB, do
you REALLY have 50 terabytes of disk storage to store them on?
It's an issue for you because of you. Get real.