Good points Bran....Others, if you read above, Shag stated that he HAS tried other outlets throughout his house and has the same problem.
Shag, coming from an IT backgroud, it is clear it is something in your wiring/ground/etc. in your house. If your comfortable with checking the things Bren and others have mentioned, be careful and go for it. Otherwise, the answer is to call your builder, or an electrician and get them in there to verify things. Most likely it is an easy fix, you just need to isolate the problem. To me it is obvious it is not the receiver.
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