After Airport Extremem Updates - Multiple Hard Drives Won't Appear

After the most recent firmware updates (I'm currently at 7.2.3, but I noticed the symptoms with the one released a few weeks ago, too.) I'm noticing some serious problems with my external harddrives, connected to my airport extreme.
I hae a USB hub connected to my extreme, that connects a printer and two external haddrives. Before my connection to these harddrives on the extreme was seemless. After the next to last update, I had to recreate the connection all the time (everytime I walked away from the computer, I came back, and it wasn't connected and it often took 2 or 3 long attempts to make it see them again.)
With the latest update one of my drives no longer appears. The first appears under the disks section of airport utility and connects without issue. However, I cannot get the second to be recognized by the extreme. I have tested this HD directly to the computer and it appears to have no issues. It spins up, I'm testing with all the same calbes, everything is browsable, etc. I put it back to the USB hub off the extreme...nada.
Not that it should matter, but the external hard drive that's fallen out of grace suddenly is a Maxtor 500 gig external.
So, any suggestions? Did something change with the recent updates to disallow two external drives to appear with extreme?

since the drives are external, connect them to a Mac and run diskutility on them and check for errors using first aid....my guess is that you have volume problems preventing the disks from mounting in the extreme. the extreme does not do error checking and does not have a way of ejecting hard drives. I'm not sure about the TC.

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