I had a similar experience at TomTom. I applied for a position, got a positive reply, tried to schedule for an interview. After that I did not hear anything for quite a while, so I e-mailed again and, in case they had e-mail problems, called the recruiter. He promised to call me back, which he obviously did not. Later I learned (also from LinkedIn) that the recruiter had moved to another company around that time.

Funny enough, until this day (months later) the position is still open and it gets reposted every now and then.