When I was last looking around a few years ago, I had a company come out and say that my age (early 40's back then) might be a problem for the chemistry in the office (mostly mid to late 20s?), but they were the exception. Everyone else was interested in the projects I had worked on and the tech I had been using.
So... I'm sure the discrimination is out there, but there are also a ton of companies that value the experience a person with some time under their belt can provide.