I upgraded to OS 10.4.9 and thats when the trouble began. This computer (iMac) is part of a network. No problem getting online with OS 10.4 Now, whenever I start browser, a message says I am not connected to internet. I proceed with dianostics, and simply keep pressing continue and then it tells me I am connected. Doesnt seem like it is remembering anything, and it is a pain. Any thoughts? Help? Thank you !