I haven't... I purchased mine through Best Buy, so any time it starts acting up, I just go to get it replaced. Still only on my second despite the issues with this one... Damn the early October manufacture date!

I did a hard reset quite a few weeks ago, and have not been having freezing issues, using the same software, and I have NOT unchecked the today timeout. I'm doing everything the exact same and it's not freezing up any more. The hard reset has cured it... though I don't want to have to do that every few weeks... Hell, I don't even think I've made it 24+ hours without soft resetting it once, I toy with it too much :P The uptime meter never makes it much past 20 hours.