I picked up one of the new Macbook Pro 13" models (the 2.4 ghz) a few weeks ago and I am overall quite happy with it so far. It's my first Mac, although I've been using them at work for years now. However, I am noticing that when I use it at home with an external monitor configured as a second display (i.e. not mirroring), the overall performance seems a little stuttery. For example, if I drag a web browser window across the desktop, it doesn't track smoothly, and if I watch a movie in VLC set for full-screen on the external monitor, I get little skips in the playback every once in a while. The jerky response seems to hold true across both displays. I haven't experimented with this very much, but this morning I tried using it with the external display only (i.e. with the notebook closed), and everything seemed to improve. Using the computer without an external display, everything seems fine as well. Does anybody else have this experience? I'm hoping there is a driver or firmware update forthcoming to improve performance, as it seems like the 320M should be able to deal with a dual-monitor situation smoothly.