Linksys Wireless Router :: WRT160N V3 - Network Crashes When No Devices Are Connected?

For a while now, my wireless network at home has been very unreliable. I posted on these forums before, asking for assistance to fix crashes that seemed to be random. I was largely unsuccessful, and the problem continued. However, as I continued to experiment with different methods to keep my network up and running, I noticed that as long as I had at least one device connected to the network around-the-clock it never crashed. This was easy enough, as I own an iPod touch and a dock (I would leave it sitting it the dock unlocked all the time). But it's annoying to never be able to leave the house with it, and I'm ready to finally get a solution to the problem once and for all. I would prefer not getting a new router, but if worse comes to worse I will.

To sum it up:
 -Works perfectly (when up) at full speed, never crashes unless there are no devices connected to it.
-When it does crash, it is very difficult to 'coax' it back into working again; it's been down for weeks at a time before.
-For some strange reason (and maybe this is a clue), newer game systems such as a Nintendo DSi or PS3 can make it start working again. I, of course, own neither of these.
-I'm using a WRT160N V3, latest firmware as far as i know.