Could you please stop talking about this? You're jinxing me guys! I've had 4 customers call me in the last 2 days needing a new router as theirs just became uselss paperwieghts.
Wait a sec?!? Um.. on second thought.. keep talking about this. I just realized I'm making money off of it.
Oh, and keep buying Linksys routers. Yeah.. these are great routers. You will never need to buy another one as they will last you for the rest of the year.... um.. your life.. yeah.
Seriously, I've had to replace 8 routers for customers in the last month alone. 5 were Linksys, 1 USRobitcs, 1 DLink, and 1 SMC. And yeah.. routers can just up and die. Consistantly with Linksys you will see 1 Ethernet port die, or the PSU will start to buzz a high pitched noise, then keel over. The older USRs will hard lock causing you to reset it all the time, while a lot of routers (and this isn't specfic to one brand) will screw up something in the router options (such as no longer supporting DHCP, UPNP will stop working, or they will constantly disconnect or reset on their own).
The best piece of advice (short of not buying a Linksys router ever again) is to not stack the router ontop of or below anything. Heat is the number one killer of routers, with electricity being numero 2. A lot of people like to stack their highspeed modems ontop of the router, or below it, but I recommend not doing so as the amount of heat the 2 generate is enough to warm my dinner. Keep them side by side, or give them at least an inch of spacing for ventelation. While it won't stop all problems it can sure as hell increase the life of your router.. and, as a matter of fact, your modem (as my business partner can attest to).