Then I know precisely what your problem is and it's not Windows. The problem is SWD doesn't play well with certain other security applications. They are well aware of it and haven't fixed the problem.
Work arounds and kludges are all over the net if you Google them.
Also, switching to a suite like Norton Internet Security or Norton 360 elevates those problems immediately as the components all work seamlessly with each other since the come from the same coding source, unlike mix and match software lash ups.
