Hello When I want to download a program for my MacBook Pro (OS X v. 10.6.6) following thing happens: Instead of downloading one .dmg file onto the hard disk, a new tab comes up in Safari. This tab is completely black and you can see in the status bar (the place where you type www. addresses) that its downloading something, but there is nothing coming down anywhere, I can find afterwards. If I try to download in Firefox instead exactly the same thing happens. A new tap occurs and no more. And this applies to all kinds of programs that are .dmg files. Every time I press a download "button" then this new tap occurs, the page is all black, and there is no more. I've been inside an "apple store" and ask if they could help. It turned out that one of the shop assistants, have had the same problem, but could not solve it. He went on to reinstall the whole machine again, and that solved the problem. Hope not that your answer to me is, that it is the only way to solve the problem. Its a problem that I have hat for a while now, and I cant think of anything that I have done, to make it be like this.