About a month ago my 2.1 GHz MacBook stopped connecting to the internet, whether I connected via hard-wire or ethernet. I had had similar problems before, but they were fixed by resetting the p-ram. However, I wasn't able to fix this problem with that method, and was stuck without internet. Then a couple of weeks ago I left my computer shut down for a few hours and then turned it on again. It was suddenly able to connect again. Does anyone know why this happened, if turning off the computer was the solution, and if there is a quicker way to fix it if it happens again?