Hello, I have been using 3.6 mail on my Imac trouble free for 2 years. My OS is 10.5.8 Recently I found I am not able to compose a new message nor am I able to access my mail preferences. I can still receive and reply. I am able to send emails if I use an old message as a template. I should mention that my internet provider changed my internet speed that about the time this problem occurred, probably just a coincidence?