Dammit!
I browse with Firefox but the current version seems to be plagued with disappearing flash content. uToob viddies disappear from the page even after displaying when the page loads. This is sucky behavior of the first water and unless it's fixed, I may move to Safari.
UPDATE: Hmmm. Seems to be an AdBlock Plus problem. I've now unchecked the suggested option and will keep my shell pink fingers crossed that I can access Flash content from here to eternity.