FYI: If you wan't to recursively both power the RPi with the hub and control the hub with your RPi at the same time just cut the red wire in the uplink cable.
-P +-------+
| | |
| c |
| | |
+-------+ |
| hub | | < SOLUTION: Cut the red wire here!
+-------+ |
| | | | |
p o o o |
| |
| +-----+ |
+-| RPi |-+
+-----+
o = other "power hungry" devices
P = PSU power
p = USB power
c = hub controller
For my part o = 1xBE USB and 2x50GH BFL, I hope the RPi will be able to run them!