Recently I have been unable at times to open my homepage or after it is open to open not able to open a second or third web page. I get messages "web page could not be displayed" or "invalid address". I have two pcs that connect through my router and if I go to thee second pc it opes all the web pages immediately , so it does not appear to be internet connection. If I shut down ZA completelt, then the pc that wasn't connecting to web pages works ok. I have no idea what has happened as I have za on both my pc's.