A window popped up asking to download the latest version of firefox. Usually say no, not having time, but this time said yes. Operating system is Mac OS X 10.5.8 with 512 MB, which is recommended. However, got to the drag and drop into Apps part of the download and there's a big circle and slash through firefox and when I try to start firefox it says "You cannot open the application "Firefox because it is not supported on this architecture". Now when I go to firefox website, it says that the latest version is not supported by my operating system...? How do I fix this? Don't make me use Safari - it's too slow to deal with. Thank you!