When I use the crop tool in Photoshop CS3, the marquee "snaps" outwards to the edge of the image as I approach and won't then leave the edge until I move the mouse far enough to make it leap several pixels inwards. This makes an accurate crop of a small amount of dead space rather tricky to achieve.
Is there a way to turn this behaviour off? I've looked in PS help and tried pressing various modifers, but to no avail.
I've not encountered the problem before: I suppose my cropping must always have been cruder in the past.
Mac OS 10.5, in case it makes any difference.
TIA
Jeremy