Gah. I'm torn on this. I loved Seasons 1-3, but thought 4 and 5 were mostly crap. On the other hands, Atlantis is one of SciFi's highest-rated shows at the moment, so it makes no sense to me to cancel it. And with BSG ending in 2009, Atlantis cancelled, and Doctor Who taking a year off, SciFi only has one proven show heading into late 2009/2010. If this was a normal network, someone's head would be rolling about now. But SciFi has an amazing tendency to frak everything up.
Sorry for the small rant on SciFi, but I'm through investing anything in their shows. $5 says Eureka is killed after its fourth season, for no good reason.