FYI - Tekkeon MP1550 (4xAA 2000mah eneloops) working fine with this cheapo hub:

http://www.dealextreme.com/details.dx/sku.4398

The Tekkeon power cable plugs directly into the hub without adapter and Im currently using a USB keyboard, a generic flash thumbdrive and a Simpletech Bonzai SD card reader all at the same time. My 2.5in external Acomdata USB hard disk (FAT32) works too.

Trick is to connect the hub without power first if you are using an auto host mode cable, then once its recognized plug in the power then any power hungry devices.

USB thumbdrives + keyboard work fine through the hub without additional power.

If you have an additional usb->nokia charging cable you can even charge the n8x0 off the hub while everything is connected.