My last update:
I decided not to use the 601 as my hub. It appears to be too unstable to manage multiple wireless access points.
My bad, I should have paid a bit more money to get something that was a bit more robust; hence the saying, you get what you pay for.
In anycase, I am using the 601 as a wireless access point instead; I have not encountered any problems since.
I upgraded the firmware to 2.01 and changed the parameters that fuzzynuts described in previous posts.
Peace out,
Bob