I have an HP Pavilion G7-1310-US laptop running Ubuntu 12.04. I also have a wireless router at my home through which I connect my laptop and other devices to the Internet.
Recently, I have experienced a weird problem. If I connect my laptop to the wireless router, my other devices' connection speed drops from 30 MBPS to ~2 MBPS. I tested this by connecting my laptop to the network with a wired connection (and disabling wireless on the laptop.) If my laptop uses a wired connection, my other devices get proper speed (almost 30 MBPS).
What could be causing this?