Hi Sean, I have the problem on my iBook, but not on my Mini. TextMate rescans the entire project directory structure for changes *every* time the window is focussed. To my knowledge, there is currently no way to turn this behaviour off, except to create the project by dragging individual files into the project, instead of whole directories. It's a PITA, but my understanding is that will stop the project reloading on focus. At the very least, trying it that way would help you figure out if this is a new problem or not. Regards, Chris.