Last night I tried accessing AdWords from my home, I was unable to. From my office it worked fine. Not sure if this is related but many people over at the forums are reporting that AdWords is down. Seems like this has been a persistent issue for the AdWords team. Reports of the AdWords system being down date back to August 10th, where a post at WebmasterWorld sprung back to life after this most recent incident. Forum coverage also at Search Engine Watch.