Here are several gotchas I learned about at SilverLight DevCamp DC. You might not even understand what some of these are talking about, but hopefully by the end of this series you will.
Keyboard input doesn’t work right for fullscreen mode
Blend’s Media encoding fails sometimes
You need to deploy debug (.pdb) files in order for Firefox to work
You need to save the root element passed during the onload event so you can do a find controls with it later
Validation and intellisense don’t work right in xaml files