Same here.

I also find it super annoying that the volume buttons are used for this as often I will be playing music and suddenly a quiet/loud track will come on and I have to go back to the task switcher to alter the volume. I personally would like to completely turn off zoom using the volume keys and have it entirely using the circular motion on the touch screen. Although I am getting a Jabra BT3030 so hopefully that will work for volume control instead so I will no longer have this problem.

Bottom line, the N900 should have had more buttons. I do not agree with this new trend of having as few buttons as possible because its a touch screen.