Learn English – What does “I want to learn english so badly.” mean

Literally, "computers are down" means that those computers are off-line, usually because of some kinds of problems (such as power failure, software failure, operating system crash, etc.).

I don't know if there are any deeper meaning. But it seems to me that the comic hints that people nowadays rely too much on computers. Even a guru still needs computers to provide a good answer. (In this case, "the meaning of life".)

PS. This reminds me of a novel by Douglas Adams, Hitchhiker's Guide to the Galaxy. In order to get "the answer to life, the universe, and everything", a supreme being had to create a computer to provide such an answer. After a long time past, the computer gave the answer, 42. (The computer that was created in the story was actually our Earth, including us human beings.)

If that was said by a non-native speaker, it sounds like they are hoping you plan goes smoothly, meaning you don't experience any bumps (problems) executing the plan.

For clarity, this is not how a native speaker would express this, but it's easily understandable.

It's similar to saying

They run a smooth operation.

meaning things just work without problems or complications.