FF3 is a CPU hog.
After a few minutes the 1.33ghz G4 is running at 100%, close FF and it settles down to something more reasonable.![]()
Interesting observation. I've had it running for a couple of hours now and I just checked my CPU monitor on my 1.8GHz 7448 G4 with 1.5GB of ram and it's using between 22 and 29% of my available CPU power (well Safari and iTunes are also running in the background). When I exit Firefox3, it drops to 98-99% of CPU cycles FREE, so I'd say you are definitely onto something there. The browser was just sitting there too, not loading a page or anything. That's the first REAL negative thing I've seen with FF3 so far.
OTOH, I wonder if an add-on (like Forecast Fox Plus) is causing it because when I restart Firefox, it goes right back up to the same CPU use area at idle. In actual use, though, I haven't noticed any system slow-down running Firefox in normal day-to-day activity and I've been running the beta since beta 2. It's been remarkably stable all along in the PPC build too, unlike some of the reports I've heard about the Mac Intel build.