Neither did I, but my battery life and core temperatures have both gone to hell and gone, and the fan runs even when the computer's not been used for hours. I'm thinking about taking it into the Apple Store and having it checked out, but the earliest I can do that is mid-May (due to school).
Anyone know a workaround, or at the very least, a way to un-install 10.3.3 that doesn't involve wiping the entire hard drive?