[Wizwad]

Right. Here we go:

System:
Acer Aspire M5811
Intel Core i5 650 4 Core ~ 3.2GHz
Graphics GeForce GT330 w. 1GB VRAM
RAM: 4GB
Windows 7 Home Premium 64bit
DirectX 11
Resolution: 1280 x 1024 32 bit
Graphics Driver Version: 8.17.11.9745

And after activating the screensaver, it still does what I described. But only in Full Screen - as soon as I put it in Windowed mode the settings screen comes in front and centre.

Looks like you were right about the settings being behind the main saver when Full Screen Jim.

Actions:
Double click MA icon on desktop.
Full screen display appears.
Press 'Space'.
Get frustrated as saver has paused but no settings are visible.
Hit 'Space' again to get things moving.
Hit 'F' to window and then 'Space' to proceed successfully with desired change through settings panel.
After OKing change, hit 'F' again to full screen.
Done.

I'll go ahead and download p to see what happens with that.