Server runs fine for ages, then my internet connection fails. Why?

[vonunov]

The easy answer is that if you choose to use wireless, stuff like this is going to happen. You can, however, do some things to help prevent it. One simple thing to try is to change the channel your wireless network broadcasts on (try 1, 6, or 11). Consider also possible sources of radio interference. Does the connection failure coincide with the operation of, say, a cordless phone or a microwave oven?

You might also want to check the router config and see if there's a way to enable logging (something about 'debug' would be helpful).

If all else fails, remember that running cable is 100% effective in resolving wireless networking issues.