Well, the D50 is a very good camera. You really cannot go wrong with getting it (and the same goes for pretty much any other DSLR camera). So if you see any review telling you not to get it, it's either a review aimed at professionals who're looking for completely different things in a camera than you would, or a review by someone who doesn't know what he's talking about.
Of course, all different cameras have strong points and weak points, and reviewers love to compare these to each other and make a big deal out of them. But unless you *know* that any of these points in particular will be a big deal to you personally, I can virtually guarantee that they won't be. Yes, with a year or two experience behind you, you might find yourself wishing that your camera did this one little thing that it doesn't, or could get just a bit more performance when performing under these specific circumstances. That's when you upgrade to the next model. But in the meantime you'll have been taking absolutely awesome pictures of an absolutely awesome trip with an absolutely awesome camera, the purchase of which you'll never regret.