Here they are, Ubuntu Natty packages of the OpenCV 2.2 branch, revision 5206. This is, at least at the moment of writing, the most recent, stable and bugless version of OpenCV available. You can see this as the probably/maybe/hopefully upcoming 2.2.1 release.
Differences to original Ubuntu packages:
Installation:
$ sudo add-apt-repository ppa:gijzelaar/opencv2 $ apt-get update $ apt-get install libopencv-dev
For more information have a look at the PPA. Let me know if there are some problems in the comments, but please don't e-mail me about OpenCV related questions. Use the OpenCV user group for this.