Yes it is, a big fat hog. A mother of all that resembles the oinking and squandering of one's precious CPU and memory resources. I love firefox I do, but I've been frustrated for months with abnormally high cpu usage especially when I have more than 3 or 4 tabs open. I get close to 70% of my CPU usage going to firefox, and at least 175Mb or RAM or more are sometimes allocated to the browser. A real swine that's for sure. I've got a 1.5Ghz Powerbook G4 with 1Gb of RAM and it's making my system perform like a dog. Any ideas what could be causing this? Does anyone else have this experience with firefox? Is this something that they're even aware of or are fixing? I was hoping the problem would go away in 2.0 as it was present in 1.5... but no luck. Ideas?