I and others are having similar issues. May I suggest using firmware 1.05.12 and see if that works better.
You get it here at:
http://products.wdc.com/n900centralrollback/
I also am having trouble with 1.06.28. It will look like it is working fine but then suddenly it won’t work unless I reboot the router. But I have to do this constantly and so I decided to just roll back When I use 1.05.12, it is much more stable.
Please use 1.05.12 for now.
