Well, I finally reached my goal of 1000 hours of up time! (I forgot to take a screenshot at exactly the 1000 hour mark like I had planned--whoops! )
Jelly Bean, while quite a stable OS, still has a few issues. At around the 150 hour mark, I noticed my homescreen was glitching and widgets either would not work or they would work but would not update properly.
An example would be me pressing the WIFI control widget and while WIFI would indeed work just fine, the widget itself would not light up showing that it was on (but the notification bar showed WIFI). The opposite would be true at times, where WIFI was off, but the widget showed that it was on.
Other widgets like Plume (Twitter app) simply refused to work. Oh well. I've also run into a ton of music stuttering while performing other operations such as installing or updating apps or switching between apps.
I'm fairly certain that a quick reboot would have solved all these issues, but I am OCD and I wanted to see how long I can keep my N7 on. I did run into a few 'scares' along the way, where I had thought my N7 would force itself to reboot or shutdown on its own (like my crappy Droid Charge does), sometimes pressing the power button to turn on the screen would result in a 4 second delay and on a few occasions the system would freeze up for a little bit.
But every single time, my tablet made it out okay in the end! The fact that I have reached 1001 hours (close to 48 days straight!) is a testament to Jelly Bean and the Nexus 7. It's not perfect, but it damn well is rock solid!
Good job Google and Asus!