Information in Ars' Forum about the event. Initial theory is that one of their ad-networks got hacked.

http://arstechnica.com/civis/viewtopic.php?f=3&t=1171612

Edit: In the short term they've disabled ads across the entire site in an effort to keep the injection channel blocked.

Possibly similar: I accidentally had flashblock disabled, and a malicious flash ad on wired.com performed many MB of requests and then redirected me to another site after 5-10 seconds.

Flagged in Safari as well and at Google Safe Browsing diagnostics page: http://www.google.com/safebrowsing/diagnostic?site=arstechni...

That's probably the reason. Several browsers use Google's lists, I think.

Firefox, Safari, and Chrome all use Google's list. Opera might, I'm not sure.

Submitted 3 hrs ago : http://news.ycombinator.com/item?id=3823537 but I'm wondering why HN is now refusing comments from me.

I was redirected on Ars to some other site today as well. disconnect.me seems to block whatever is going on.

all is well again...

Flagged by Firefox as well.