realised, that after update to OSX Mavericks (10.9) there is almost invisible type cursor (as you hit T and try to edit text) in my Illustrator CS 5.5. Have you experienced this problem too? Well, it is not invisible, but like 10% black on white backgroud. As you can see on attached picture, cursor actually IS there, but from the front, you can't see it... Any opinion or troubleshoot?