Coming back to the computer after lunch, there was an authorisation box open asking for the Admin password to instal something called completer.app.
An unknown-to-me disk had mounted itself on the desktop. (Sorry I don't remember the name of that, I dismounted it. I did not provide any password - I'm not that stupid.)
If it helps, my default browser is Firefox, search engine Google. OS is 10.6.8. I never download applications unless I am absolutely sure that they are valid and safe, and had not requested or attempted another one while I was away from the keyboard.
Last edited by Bensheim; 12/15/14 03:48 PM.
