Pop ups asking whether I want to reopen closed pdfs (No.) and so on appear to interfere with functioning. Today, opening a PDF I just wanted to do a quick "find" for a word in a pdf: I'd start to type the word I want to find, and then one of the annoying pop ups came up and the program froze - I couldn't finish typing the word I had started. I hoped that restarting the program would allow me to access the application without the pop ups - nope. I tried 3 times and can't do a simple "find".