Interestingly, most of the windows slowing down and crashes that I experienced, aren't anything related to any of the internet explorer, but rather, the softwares that are installed with windows. Startup programs, plug-ins, are the ones to blame, it got a bit better in windows 7, but windows XP is totally unforgivable, I had to remove these "startup programs and plugins" only with a third party program. On the other hand, OSX doesn't seems to have this problem, most of these startups is a checkbox and easily removed. If you have not aware, I also build my own PC, and install my own OS and programs, but if you ask me which OS is more stable and easiler to install, I would be lying to you if I tell you Windows is better OS. Last Windows XP that I installed, it took me 4+ hours, after updates and everything, and don't get me to start with Vista, haha. For those that aren't a computer tech or have the knowledge, trying to run a stable system on windows is a bit more challenging then an OSX. If you are not experienced with OSX, there's a small learning curve and it'll take a little bit before you are used to it.