Hi, Please take a look at this link. I can not use my WiFi coonection or Airport, and I can not update Adobe Flash among others. The reason stated is because I can not give my password. The pro- blem is, I don't recall forgetting it or having changed it. How could I have a new password now that I have Yosimite 10.10 ??: Hi : ) !!! I forgot my password and I may not be able to update software ... !!! Thank you, kind regards, igmolinav : ) !!!