I'm running Ubuntu 12.04 whenever I launch steam or start a steam download I lose internet connectivity. Specifically I can no longer ping my default gateway.
If I reconnect to the wireless it will restart the connection and work fine after that until I start a steam download, whenever there is a steam download it will randomly drop the connection.
It never says that I've been disconnected from the wireless network I can just no longer ping the default gateway.
Thanks for reading and I'm happy to provide any additional information.