You get two WOW's on this onel Coffeetime. The first wow is because you have solved the biggest frustration for me over the last few days. I was having the choppy videos with Hulu, not YouTube, but I'm taking it on faith that you've found the actual problem and solved it across the board.
The second wow is that I just now noticed that, besides being gorgeous, your leopard is animated.
UPDATE -- set my interval to 300000. Rebooted completely. Things worked fine. A little while later, I closed Firefox (set to auto-delete history, preferences, etc). Went back to Hulu. Worse than ever. Because of my purge settings, I have to disable hardware acceleration each time I go to hulu. I did this, but I'm back to diced streams. Not just chopped, but diced into little two-word bits. I'm fully updated (from 2009.1 through today, kernal 2.26.8, but I don't believe I have KDE4.x.), including anything in synaptic with the word "stream" that I have installed. Usually, once my video streams start this stopping business, I'm stuck with it for about 24 hours no matter how many times I flush cache and even reboot. Static IP through my Clearwire internet antenna plugged into my ethernet port.