Ok so I had a few issues jailbreaking my phone but I wanted to help those out who have 10.5.6, a usb hub (go get one if you dont), and can't seem to JB the phone.
1. Plug USB hub into computer
2. Plug phone into USB hub
3. Run QuickPWN
4. Select your options
5. PWN it
6. It will get stuck most likely saying its 115kb/115kb on a file transfer, don't fret!
7. When 6, if 6, has occurred:
a) UNPLUG phone from USB hub
b) UNPLUG USB hub
c) Plug phone into same USB port USB hub was in
Now it should continue on (give it like 10-15min).