NetMeeting prevents SDL apps to run properly

Hello,

When you just run Windows NetMeeting, it blocks SDL applications while
they are running. If you quit NetMeeting, SDL apps continues to run.
It happens with both OpenGL SDL apps (testgl) and pure 2D ones
(testbitmap). This is very strange, as OpenGL screensavers run without
exhibiting this problem. ‘testvidinfo’ says directx driver is not available when
NetMeeting is running and fall back to windib driver.

I tested it under Windows 2000 pro.