Does launching the SafeCentral SafeDesktop browser stop all activities on my Windows desktop?
No, launching the SafeCentral SafeDesktop browser will not stop any of the processes you had running in Windows.
If you have IM programs opened, they will still be opened and connected. You can conduct Skype calls, for example, even when the SafeCentral desktop is open.
File downloads and program installations will still continue in the background while SafeCentral SafeDesktop is opened.
Your audio will not stop either, if you have music or a movie playing, that will still be audible when in SafeCentral SafeDesktop