Ok I came here after hours of useless tries, but I'm quite unfamiliar with linux, so I may be missing something obvious...
My Pi runs latest Raspbian and seems to be correctly setup on my home wifi LAN, everything works (LAN/Internet ping, SSH, various services). I'm also powering the Pi through a powered USB hub.
After a random amount of time (5min to 3hours) the connection just stops working, which means, wicd still says that is connected to the router, with the same IP (and the router detects the Pi as well), but the Pi can't reach or get reached by anything anymore (eg: no ping, no ssh, no internet access).
When this happens I have to manually disconnect & reconnect to the wifi through wicd-curses, but it's a hassle since I'd like to control the Pi through SSH only. Any idea?