Wireless router...?

Some specific information you might be interested in:

Originally Posted by Wikipedia

As shipped, the Linksys firmware crashes under heavy peer-to-peer network traffic, such as BitTorrent. The reason for this crash is that Linux's connection tracking by default keeps track of old connections for five days. This five day limit quickly overwhelms the router when there are a high number of network connections, such as with BitTorrent, and can only be resolved by power cycling the router. For a detailed tutorial on how to permanently fix this issue on a pre-v5 router see the uTorrent FAQ[15]. Briefly, it involves installing a 3rd party firmware.

I don't know if this bug exists in the v5 and v6 routers, since they run VxWorks rather than embedded Linux.

Jam it back in, in the dark.