Copy and Paste and Drag and Drop do not work
My Macbook no longer copy and pastes text or anything else, like when I want to copy a line of text on the internet or in a document, I cannot paste it even when I manually click "Paste" instead of ctrl+v.
Also, I can't drag and drop files and folders from one place to another.
Is there a way to fix this???
MacBook, Mac OS X (10.5.8)