i really like this screensaver (or at least what the screensaver does), but i can't use it. in the preference pane i can test it and it works fine, but when the screensaver starts, no pictures show up and the screen freezes, causing me to force restart my computer. any ideas why this is happening? i'm running a dual 2ghz g5 (rev a) with a radeon 9600, if that helps at all...