I currently use a Canon Rebel T2i. It's great for an entry level DSLR, but it has its limitations in comparison to full sensor DSLR's. I would upgrade but I don't have the money at the time. As much as I'd like to get a new camera, I just try to remember that it's not the camera that takes the photos, it's me. I can still produce great photos with a cheaper camera, and I may as well continue to do so until I can afford to upgrade.
Yeah, sorry, but needing a change doesn't sound like a good reason to buy a new camera. You should find out why you're unsatisfied and work on correcting that. Like *Fuzzypiggy said, if you don't, then a week after you get over the dazzle of your new camera you'll be right back here with the same issue.
To back up ManualFocusPhoto, you need to identify what's wrong with the camera you have. Don't take it the wrong way but until you can do that, simply getting a new camera means you will be back here in a X number of weeks time with the same thoughts, "My photos aren't as good as I'd like, what's wrong with my camera I think I need a new XYZ to fix it?".
Second, why are you planning on getting a new camera? how is your camera restricting you? is there a specific feature you want that your camera can't deliver, or are you just wanting something newer just for the sake of change?