Comment 12 for bug 390308

Witold and David, as I wrote in bug #385850, see https://wiki.ubuntu.com/X/Screensavers and please contribute your own measurements. Note that the results depend on your graphic cards and drivers.

I am closing the hundredpapercuts task since this is not trivial to fix correctly. For the xscreensaver task, I am pretty sure there already is an open bug about this issue.