On my desktop, I'm currently using IE9. I had FF downloaded and it started freezing up. I found a 64 bit version of FF called Nightly that worked great for probably a year. It then started freezing up. I can't figure out what is causing it but I don't really like IE. I tried IE10 and it was so bad, I went back to 9. I tried Chrome for a while and didn't care for it.