Like in the title bought yesterday! I have been working on a powerpoint presentation and then I opened iTunes. After closing iTunes and returning to my powerpoint presentation it wouldn't accept my key strokes. It now, on average, takes two hits on the keyboard to register the stroke. This is awful as I need to get this work done! None of the other applications are affected and I am having no trouble writing this... I have tried a restart but to no avail! EDIT: It is now taking aroun 5-6 keystrokes per letter!