> * On Windows, in particular, the settings seem to flicker back and forth between Qwerty and Dvorak between programs, and between invocations of the same program. No idea why it's not a global system setting.

This becomes particularly obnoxious when Explorer is somehow "partially" switched to a different keyboard, such that minimizing everything sometimes will and sometimes won't switch you back to the layout you're using in Explorer.

Not to mention that it's really easy to accidentally switch layouts. I've certainly done it a number of times.

In the end, it's just far less of a hassle for me to stick to QWERTY on Windows.