Hiring manager sent me an e-mail based on my resume, posted on Monster and Dice. I replied and called him shortly thereafter. We had the interview with the hiring manager and his top engineer. They seemed suitably impressed and and encouraging. During the interview, a problem came up, to which I suggested an immediate solution.
After the interview, I sent a follow-up letter. No response.
Hiring manager did not accept my phone calls. I left voice mails, he never responded. Additional e-mails: Same story, or lack thereof.
After 4 weeks, when I called from an unfamiliar phone, he did pick up. So it appears he was using caller-id to screen out my calls. Even then, his responses were non-committal.
He wins - I stopped trying.
While the interview itself was cordial, challenging and interesting, the post-interview time was quite unpleasant.