Some questions about running U1/U2s on a Raspberry Pi B+ using BFGMiner (Debian Wheazy):

1) I can get the Pi to recognize one miner consistently and occasionally two when plugged directly into the Pi. The Pi won't recognize any miners plugged into a powered hub (the setup works well in a Win 7 environment). Any ideas?

2) Given #1, how many miners can I run using powered hubs on the Pi?

3) When using BFGMiner I can seem to get it to recognize the configuration file. I suspect I can force it with a particular command line but don't know the syntax. Any ideas? (I recognize this one might need to go to another forum)

Any help appreciated.

Ken