Is your Crosshair on a different angle than the UCS? SnapAng command will help you change this.Sometimes you might find a file where the crosshair is tilted although the UCS is aligned to the view. You might get crazy trying to align the crosshair with the UCS if you don´t know the SNAPANG command.SNAPANG controls the angle of the grid so the crosshair is aligned to it. If you find a file where the crosshair is tilted although the UCS is squared with the view type SNAPANG and type "o" as the angle. THe crosshair will automatically go bacK to its "normal" position.