Hi Jeff, Great presentation from what I can see, you always lose something with just the slides. I was wondering how you think Cisco will address Open Source with the pending purchase of Sourcefire. Sourcefire's business model is substantially different than Cisco's, as they have used Open Source as a tool to make them a defacto standard in IPS/IDS, and was able to upsell on ease of use, enterprise scalability, and support. This differs greatly from Cisco's approach of selling proprietary products, and contributing to Open Source projects to assist and have a voice in future technology shifts.