I've had the DS8800W airplay speaker for a few months now and when it works i love it!

It connects fine once i reset it and plays great. Then after a day or so i get the flashing green light and it can't seem to find the network. It is so frustrating! The network channel is set to auto as the manual suggests and i am using an Apple Airport Extreme in the next room AND an Airport Express upstairs so cannot understand it as the signal is very strong.
I can only believe it's a dodgy unit or a temperamental design?!

Any help would be appreciated it is driving me mad!