I was informed today by Adobe that there is NO technical support for flex builder 3. Only for Flex 4 beta.
I am very disappointed as I just bought Flex builder this week after I carefully evaluated the product during the trial period. I had an issue activating my product, and needed support to remove some conflict with the trial version that did not disappeared even after uninstalling and deleting completely the trial version. Customer Service was very nice but no technical support was offered. That shows the commitment of Adobe to this product. Regards HP