I installed Leopard a few weeks ago and have been having two problems that occur fairly regularly. I'm not sure if they're related: 1. Dock items do not magnify when the cursor is placed over them and menu items are not highlighted when the mouse is clicked and then the cursor is placed over them. The two problems are occurring with greater frequency and always occur at the same time. (In the dock options, magnification is turned on.) 2. A few times a week, the dock will simply disappear. It will not reappear unless I log out or restart the computer. Any idea what the problem is or what a fix is? Thanks for the help.