My wireless router disconnects me from the internet every 2

[Shask]

Title says it all. I've got my laptop in my bedroom and my wireless router is downstairs. I have full signal. However, every 2 minutes or so the connection will drop for a split second, causing me to be disconnected from things such as IRC and oH&H before it picks up immediately. Is there anything I can do to stop this?

Obviously as I haven't logged out properly when it drops, I get "Already Logged in" and have to wait ages until I can get back in.