I am running oppenSUSE 11. I have protected pdf files I need to open for classes at University of Phoenix (my textbooks) They use protected pdf. I downloaded acroread from yast and it opens the file, I put in my user name and password to unlock. I then get a pop up saying SSL error and to get certificate from terminal. I do so, accept the certificate but acroread still doesn't find it. UofP doesn't give support for linux so thought I'd try here. ( I can open in windows without a problem). Thanks for any help!!