I didn't see in the thread where anyone gave feedback on the torrents for the 2011 Nav DVD, so I will. It works great, and I use it in both my E70 and E92 without any issues. I can confirm the maps are indeed updated from the 2010 maps (which i purchased from the dealership) and does include the red light and speed cameras. If you are familiar with torrents you can figure out how to download and use these. You can all the info you need on the links here:

2011 Nav DVDs Released - Page 4 - BMW 3-Series (E90 E92) Forum - E90Post.com

The only issue you will have is if you burn the dvd at too high of a speed as it can introduce errors into the disc.