When I try and open one of the Microsoft Office programs it tells me that some of my fonts are corrupt or it won't open, the ball just spins the whole time. I had this problem ages ago and was told not to use fontbook but to use linotype fontexplorer instead as it was fontbook that was causing the problem. I had a problem today with my keyboard and in following the instructions given to me by Apple it's caused the problem to start again. So I need to stop fontbook from working and causing all these problems. I don't want to particularly use Microsoft office but my business invoices are done in Excel at the moment, so until I find another program to use I'm stuck! Also in mail I have a huge gap between the name of the person sending me the email, then a group of lines including the subject and date before another gap and To: before a line and then the message from the email. This also happened before when I had a problem with the fonts. It's driving me nuts!!