Screensaver Makes System Unresponsive

[Egan McComb]

Binary package hint: rss-glx

1) Ubuntu 9.04 Jaunty Jackalope
2) 0.8.2-1ubuntu3
3) Screensavers starts and runs normally, can be quited from.
4) Screensaver starts up and freezes the system completely. Needed to do a reset.

The specific screensaver I am getting this problem in is "flocks", though I have not test others.
It runs fine as the objects come into view, but after a bit, the screensaver just freezes and the computer becomes unresponsive.
In order to escape I needed to use the SysRQ key sequences... I could not restart the X-server nor could I get to a tty.

I believe I am using the xserver-xorg-video-radeon driver on the ATI Mobility Radeon X1300, if that matters. I am also running Compiz with custom settings, if that matters.