Let's all take a deep breath...
Now exhale. I think there was probably a knee-jerk reaction to this news. I am able to bring up the story just fine. Here's the skinny on it:
“The sudden burst of radio energy lasted only 0.005 seconds,
and had spectral characteristics that suggested that it was from a distant galaxy,
probably billions of light-years from us." - Seth Shostak, Ph.D., SETI Institute
That's it. A 0.005 second signal. To most people it's so quick if it were a sound and not a radio signal, you wouldn't even realize you'd heard something. If it were a message, it would be longer, and almost certainly repeating. If it was intelligent in origin, then at best, it'd be some sort of "stellar ping" broadcast out to get a response, rather than a directed message towards Earth (or even our galaxy) specifically.
In all likelihood, this was almost certainly some sort of stellar explosion, galactic collision, or something else that could easily produce some radio -wave noise burst. The article didn't even say it had a pattern to it. Even if it were an alien species that produced the signal, keep in mind that the signal itself would be billions of years old.
Now think about the implications of aliens having to cross billions of light years of distance to reach us. If they had technology advanced enough to do that, then in a few billion years, they'd have already reached the technological point at which they could exceed the speed of their own initial signal.
And in the off chance that matter truly cannot go faster than the speed of light, and they decided to immediately give chase to destroy or subjugate the first life form to respond to the signal (because you sure as hell wouldn't allocate the resources to invade a place that didn't respond), our best relay technology is also radio waves, and it would be billions of years before they received our reply, and then another several billion years before their invasion force could reach us (since they couldn't travel faster than light either).
That's not to say I don't think there aren't some clever life forms out there somewhere, but this news isn't nearly as exciting or scary when the facts are examined logically.



As to what this new signal could be, well it could be ET saying no more repeats of I Love Lucy
pleasseeee !! 