Thanks Dan . I am glad that you found that the issue you had was caused by your network rather than Bartok.
I would, however, point out that recommendation of a particular network product as a solution needs some care as although it certainly can be there may be caveats. A post earlier today from Phil of dCS support explains why:
It is often not that a network component itself is not operating correctly but the way it has been configured. This can be changed ( with guidance) by the user and it may therefore fore not be necessary to buy a replacement.