I just upgraded my Azure solution to VS2012 and October 2012 version. I have 2 webroles but only 1 of them is working now when I look it from IIS Manager. I'm sure of it because my webrole's inter-role communication requests are failing too.
First I tought it can be another problem so I asked this question: Windows 8 Azure Emulator is Remapping Port 80 to 81
Here you can see my IIS Manager: