It seems to be drawing almost as much as the rest of my tabs simultaniously, I doubt this new software is very friendly on memory usage, seems to me like it is worse on that than the previous one.
I see you've switched to IPB, which is nice I guess, but removes all the nice customization options... in other words, the pages are now really short, I'm seeing signatures, and so on and so forth. And of course all the little annoying bugs with the posting field.