DFX problems with chrome

As i know that firefox has 14.0.1 for its newest version, i see that your is version 15(may be it is a beta version). Indeed firefox has a problem when it is accessing a youtube, because it consumes more of your resources rather than chrome. But try to use a stable one i think.

If DFX for RealNetworks is installed successfully, then DFX should start immediately when you run RealPlayer or RealJukebox. Click on the DFX icon from the taskbar to view the controls. When DFX is active, you can minimize DFX to the taskbar, but cannot hide it. If you don't see the DFX window on your desktop or taskbar, check to make sure that it is not disabled. DFX can be re-enabled as follows:

In Windows

1. Select Start > Programs > DFX for RealNetworks > Settings
2. Select "Yes" for Autostart

HMM?

Open .DFX file with Photoshop?? Impossible. .DFX is created by AutoCAD.

Go here http://www.fileinfo.com/extension/dfx

.DFX is Autodesk AutoCAD 2011 file and should be opened by AutoCAD, not by PS.