First, I love this application, it's a real productivity boost. But... I'm seing some strange behaviour with my setup.

Setup:

I have a (perhaps unusual) setup with a 13" MacBook Pro (1280x800) connected to an Apple display Cinema HD (1920x1200), these are arranged with the display above the MacBook and the MacBook screen. If it makes a different which is the "main" display, I have the Mac menu bar at the top of external display and the Dock at the bottom of the MacBook display.

Issue:

I get a number of different states depending on the action I use and the state of the window prior to doing the ShiftIt action.

For example:

• Command+Right followed by Command+Down on an application currently on the external display results in the application being positioned "correctly" with the top left corner being in the middle of the top display, but the width is the width of the bottom display and the height is random and often expands well down into the bottom display.
• Command+Up followed followed by Command+Right on the bottom similarly results in the top left corner being positioned correctly but here the width is too large and the window expands well off the side of the bottom display.
• On the bottom display Command+Down seemingly randomly either expands below the Dock or is sized to end just above the Dock.