Things I Download On Mac Wont Open

If you want to open an app that you didn’t buy in the Mac App Store and instead downloaded it from a developer on the internet, there are two way for opening the app. The quick way to open an.

  1. Things I Download On Mac Wont Opening
Wont

Things I Download On Mac Wont Opening

My wife has an eMAc that has developed a problem. Any time she tries to download a file from the web, absolutely nothing happens. This is true for both Firefox and Safari and applies to any type of file (picture, game etc.) On the other hand, updates from Apple download fine and my laptop downloads fine when plugged into her cable modem. She is running the latest version of OS X and the start of the problem does not seem to coincide with any new software being installed.
Any ideas as to what might be the cause?
Thanks