I attempted to download Firefox 4 because Firefox said it was compatible with Mac OS 4. I have OS 10.4.11. In attempting to download the downloader stated that I had a higher level of Firefox in applications and was attempting to download a lowever version. It asked if I wanted to do that or cancel so I canceled. Why does Firefox say that version 4 is compaitble with OS 4 when it obviously is not. Or should I have downloaded the newer version I thought I was downloading even though Firefox said I was downloading a version older than 3.6.17. The whole experience is very confusing and probably wrong. What's the right answer?