[ubuntu-za] Screen saver confusion

[Jan Greeff]

The screen saver settings on Ubuntu 12.04 are confusing: Under "display 
modes" it says "Blank after..." but when I hover the cursor, it says 
"How long before the screen saver activates."

So if I set it at, say 30 minutes, will the screen go blank after 30 
minutes or will the screensaver activate after 30 minutes? It appears as 
if the screen goes blank, but it seems to go blank after a short while 
anyway, irrespective of how I set it up.

Can somebody please elaborate on these settings?

Jan