Quote Originally Posted by fingers99
Have you tried apt-get update?

My guess, nothing more, is that you should consider pointing your sources list at unstable. In a sense, you're asking for trouble if you use a mixed sources list on a fairly old version of Knoppix....... especially with something as freaky and complex as Mozilla.

As to the "imminent failure" message, take it seriously. False warnings are relatively uncommon. It looks like it will die. Soon. Buy another. Now.
Yes, I have done apt-get update. Some of the lines say "testing" and some say "unstable". Does doing apt-get update update my sources list?

Apt-get update runs and it's last lines are:
Reading Package Lists... Done
Building Dependency Tree... Done
E: Some index files failed to download, they have been ignored, or old ones used instead.

How do I point my sources list at unstable?