I could be wrong but II believe that is the error you get if there is a momentary loss of connection between your computer and network. If I'm right you need to get a stable connection between your wireless router, if you are unable you'll need to use a wire.
Typically with windows, at least XP you'll see the bubble pop up at the bottom telling you have have an excellent connection etc etc. That is a connection that was lost and reconnected....
Then again maybe I'm getting my errors confused..
Anyway if I am right like I mentioned its mostly due to the way you have your network setup, not TT Home or even Windows for that matter.