Paying attention to my Twitter feed, I noticed a story on Gizmodo which showcased a number of 30 GB hard drive Zunes were freezing for no reason. Upon looking at my own, I noticed that mine froze as well. Here is a video for proof!
I’m currently in the middle of trying to perform a hard reset but it is not working.
After unplugging my Zune to let the battery die, I plugged it back in to recharge. This seems to have solved the issue.