I am using Garena for hosting my DOTA (Warcraft The Frozen Throne) games. After each game my friends will tell me that I have left the Garena room (aka disconnected). Googling led me to threads in the Garena forum saying that the internet connection is not stable. That said, I do not have a problem with my 2Wire 5012NV.
Running on Singnet 100Mbps Fibre plan.