The Openbox's are very much a hobbyist reciever, and my s10 is very poorly put together. But (touch wood) i've had no problems so far. My protek9700 is a far better made box and almost plug&play, but only has newcamd C/s capabilites
I suggest that you do a factory reset on your S10 and reload the lastest firmware (310711) which seems stable and apart from a little glitch after changing channels is fine picture/sound wise.
The s10 is a good box, but probably not the best.