I moved my room around yesterday, and originally my iMac was in the far corner of my small bedroom. After the rearrange, now its on the opposite side of the room, and since then the iMacs internet connection has been unstable. It'll drop, randomly slow down to a crawl etc. My MacBook is fine, and so is my PS3, its just my iMac thats causing havok, all because I moved it from one side of the room to the other. I can't be because I've simply moved the iMac from one side of the room to the other can it? My MacBook can pick up a strong signal from the bottom of the garden, so the iMac really has no excuse.