Share with your network!
... at least, if you believe Google.
It's 7:15 AM on Saturday, 1/31/09. Every search term I've entered into Google for the last half hour or so has resulted in a pretty standard list of results, with a new addition - every result is tagged "This site may harm your computer". Any links in the results feed me through a Google interstitial page that tells me that the page (even Google's own homepage) has malware, and that I shouldn't go there (and, to make it harder to accidently do bad things to my computer, there's no direct link from that interstitial page to the result I want to visit). Their internal link to an explanation is also broken; one or more machines appear to have fallen over under the weight of everyone asking "What's wrong with Wikipedia??!?!?"
This is supposed to happen when you try to access questionable pages. This morning, Google thinks the whole world is questionable.
[UPDATE: as of 7:30 AM, Google appears to have fixed themselves. The world waits for an explanation. I wonder if this is the result of breakage in their open redirect detection.]
[UPDATE: Google's blog now has an official explanation. The value '/' was manually added to their list of possibly malicious sites, and '/' expands to 'all web sites'.]