I've had a similar, though less severe experience. My Snap! 4100 was visible from the network, but it would take a long time to display the initial shares, and then the network interface started having intermittent problems. I'm copying the data out of it right now so I can swap the drives to a new Snap! chassis, but if I have the same problems you have, this will be the last Snap! I try. A server may be more expensive, but I can manage it better, and have the ability to address the drives directly through another commodity-level RAID controller if the electronics fail.