Two years ago I switched over to Mac. Now I use only mac. But I don't like to change my email address from hotmail (I still have another gmail address as a standby account). Recently I found I cannot send emails from my hotmail account. Windows live says to upgrade my browser safari. Downloaded the safari new version. Then I found it is not compatible with my operating system OS X 10.5.5. What shall I do? I don' like the way they change software. There should be some solution. Can I buy new operating system? If it says Hardware is not compatible then money go into waste.