On MacBook Air and recent MacBook Pro systems, Adobe® Photoshop® CS4 can use a multitouch gesture to enable rotation of the document canvas. Some customers find that the canvas gets rotated accidentally through inadvertent use of the gesture on the trackpad.

This plug-in disables the multitouch gesture for canvas rotation, as well as the gestures for zooming and flick panning. Canvas rotation remains available through the Rotate View tool, and Photoshop is otherwise unaffected by the plug-in.

At long last, deliverance. If you use Photoshop with a multitouch MacBook, you may have noticed the compass rosette that sometimes appears on your canvass for no apparent reason, rotating the view of your canvass and generally giving you nosebleeds. And you may have searched vainly for a way to switch it off.

Well, here it is. Download this disk image from Adobe, drop the file it contains in your Applications / Adobe Photoshop CS4 / Plug-ins folder, and relaunch Photoshop. Kaboom.