Firefox continues to be a resource hog

I hate using Firefox. The only software I hate using more is IE6 or 7. My gripe with Firefox is that it is such a resource hog. On my oldest desktop, with just 1GB, it is soaking up resources. That is based on looking at the Taskmanager and the processes tab. I like to have a lot of tabs open and it some of them are "active", it really shows.