After the upgrade to Intrepid the web developer Firefox add-on didn't show it's toolbar anymore.

The new network-manager package in Intrepid messed up my firewall (managed by Firestarter) by connecting to the wired and wireless network at the same time. The solution for me: Gufw.

Almost flawless upgrade from Hardy Heron to Intrepid Ibex. Only python-setuptools needed manual attention. Other than that: I love it!