From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; rv:1.7.3) Gecko/20041002
Firefox/0.10.1

Description of problem:
Certain screensavers are suddenly too slow! I am getting less than 2
frames per second from atlantis and similar from the stairs (<5 fps)

Similar results occurred briefly when Xorg 6.7.993 was released, and
fixed rather quickly


Version-Release number of selected component (if applicable):
xorg-x11-Mesa-libGL-6.8.1-4

How reproducible:
Always

Steps to Reproduce:
1.open preferences-->screensaver
2.select atlantis
3.select preview
    

Actual Results:  Whales barely moving about the screen

Expected Results:  Frame rate above 30 fps

Additional info:

System:
CPU intel P4 1.5GHz
GFX RADEON 7200