Transfer rate suddenly dopped!?

Hi,

Basically I have a WDTV Live box with 2 hard drives connected. It is plugged into my router and I can access the drives fine through the network. I have been transferring files over the network fine for months then all of a sudden in the last week evertime I try to copy a file over it transfer at 80kbps - however copying from the wdtv onto the computer is on 7meg!

I cannot understand how it is suddenly so slow just for transferring over.

Has anybody else had something similar? Did search but found no helpful answers.

Thanks.

Does anyone have any idea at all!? I have tried loads of different things but no luck yet.