Yeah. USB 2.0 is faster in burst speed, but on average Firewire is faster. All LCD monitors have scaling problems when not using native resolution as they are digital monitors as oppsed to CRTs which are generally Analog. This means that on analogs, the pixel size has unlimited scalability. The digital monitor however, has pixel sizes which are basically fixed and if you want to decrease your resolution (and thus increase your pixel size) a certain amount of interpolation has to occur, thus the bluriness.
Unless you absolutely hate the display, keep using it as you will get used to it with time. With regards to the trackpad, I have had a few problems also, but have a play with some of the gesture settings and you may be able to make it suit your needs. As mentioned above though, you cant really beat a mouse so this may be worth a try. If you can persist with your machine and set things up to suit you, I think you will find it to be a good piece of equipment. If you can't and you really hate it though, return it and get something else.