Yes this is a "problem" on HN sometimes. The original posts don't get upvoted, but some summary/repost by another more known site does. Yesterday there was an article that was submitted from multiple sources, but it was only the Engadget one of all the sites got to the front page.
I'm unsure how that's necessarily a problem with HN so much as it's a problem for headline writers. There are a lot of articles hitting /new every hour; it's the original headline writer's job to grab our attention and make us read them.
I wanted to read some real hacker news discussion, which we're now getting with a better title.