Upgraded to version 3.4.2 this morning. Everything looks good so far. If you run into something not working right, please let me know...
Up to date Moodle Documentation can be found here: Moodle Documentation
Clearing the Browser cache on your computer is recommended:
Internet Explorer: Press Ctrl-Shift-Del, check all boxes except Preserve Favorite Websites and click Delete
Firefox: Press Ctrl-Shift-Del, pick Everything, check all boxes and click Clear Now
Chrome: Press Ctrl-Shift-Del, pick "from the beginning of time" from the pulldown menu, check all boxes, and click Clear Browsing Data