http://brainstorm.ubuntu.com/item/17087/ It has happened to me before, one of the screensavers it plays does it.
# It is obsolete
Screensavers were invented in the olden days because display phospors would burn in. Displays have not been built like this for eons.
# It uses a lot system resources
# ...most of all...It cannot detect if a video is playing and will start while one is playing. gnome-screensaver expects video players to implement the solution on their end in a burdensome and difficult way. That is so bassackwards!

To everybody that still has this enabled, you do not have a COMPUTER with a screensaver also running. You have a SCREENSAVER with a computer also running. We should fork it off and call it gnomescreensaverbuntu.

[-5 votes] Solution #1: Auto-generated solution of idea #17087


]]> en-us Tue, 06 Jan 2009 22:56:36 +0000 Wed, 07 Jan 2009 10:01:06 +0000 QAPoll module http://brainstorm.ubuntu.com/idea/17087/ Tue, 06 Jan 2009 23:14:06 +0000 Wed, 07 Jan 2009 00:57:48 +0000 Wed, 07 Jan 2009 00:58:16 +0000
And you might want to do all this without logging off.

So something like a screensaver is still necessary, even though the actual screen hardware doesn't need it.
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