I received a couple of these units yesterday and got them up and running fairly easily.  I was a bit disturbed to check them today and see they ran for only about an hour before the hashrate plummeted and became unstable.  After about 10 hours they stopped hashing completely. 

Any tips for getting these to run stable?  Is there a recommended method of restarting the software once it crashes?  I'd hate to think that I'll have to be checking on these things every few hours to get my $0.45 per day from them...  It's a bit late in the Bitcoin mining game to have such instability I would think, especially considering these miners have been out for some time now.