wsdd stops working in 15-Stable

in 15 stable if i run wsdd i can see my computer in the windows machines 
network neighborhood like normal until i refresh the network 
neighborhood window then only my 15-S machines drop off the list.

i can make the host appear again by restarting wsdd.


i dont see this behavior in 14.3


i had seen somewhere where something to do with  messages sent dont go 
thru firewall? but im behind the firewall and my other 14.3 machines 
dont do it, they stay on the network neighborhood all the time even 
after refresh.

im at a loss here.


anyone know a fix ?

thanks

George