Hello, about half an hour ago all the icons in the top right corner of my Mac OS X (10.4.11) disappeared. The only icon that has stayed is the spolight icon, but it only shows up every five seconds. On top of all of that my keyboard will not work at all except for in Internet Explorer and Microsoft Word. I have all the latest updates installed. The only thing I have tried so far is to restart my computer. Thank you in advance for all of your help.