I've only had my Oregon 550t since Christmas, but for the past couple of weeks, I've been having trouble with it freezing. The first time, it kept doing it on the same cache, just as you described, when I'd try to view the description or logs I'd get only the arrow and the go button, but it worked fine for navigating. I tried reloading the GPX file when I got home, and I didn't seem to have the problem anymore, but it did it again this weekend. The cache I was viewing was very simple though, no special characters in the title and no html on the page. It also gets hung up when I try to delete WPs manually, sometimes it just takes awhile, but other times I have to reboot. It's also hung up a few times on the camera. I was reading this thread to see if it was related, but it sounds like I'll have to keep a watch out to see if I'm the only one Thanks for the info!