Twitter & Facebook, among others, appear to all be down or having access problems. It doesn't appear to be an infrastructure problem, but something more widespread, such as an ISP problem or distributed denial of attack.Twitter was inaccessible for at least a half hour on Thursday morning, followed by a period of slowness and sporadic timeouts (and more outright downtime). It's not clear what has caused this. My theory is that it was the millions of people tweeting complaints about why it can't be Friday yet.

Judging by the timeline of my TweetDeck client, it looks like the problems started right around 6:00 a.m. PDT.

"We are determining the cause and will provide an update shortly," Twitter's staff posted at 6:43 a.m. PDT on the service's status blog.

The link for this article located at CNET is no longer available.