Why choose proprietary software over open source?

As part of my interview with Dean Drako of Barracuda Networks, he mentioned to me some survey work Barracuda has done. Barracuda talked to 228 enterprise customers and asked what advantages open source has over proprietary software, and vice versa. The answers were a bit surprising...

http://www.news.com/8301-10784_3-9789275-7.html