I'm having a weird issue with Photoshop CS3 and I can't figure out how to stop it.
When I open Photoshop CS3 and create a new document, I draw a rectangle, which creates a new layer. I then apply a layer style effect to that object, like a drop shadow. Once I do that the problem starts. All new layers have drop shadows applied to them and I have to open up the blending options layer style window and manually turn off the drop shadow. The drop shadow disappears on screen, but in the layers window that layer shows a drop shadow applied to it (even though one isn't.) If I close the document and create a new one all new layers *still* have a drop shadow applied to them. The only way to stop this behavior is to close Photoshop and re-open it, but the behavior begins again as soon as I apply an effect to a layer.
I've held down CTRL-ALT-SHIFT while starting Photoshop and deleted the preferences file multiple times, but the behavior persists. This didn't used to happen, but started after someone was trying to learn Photoshop on this computer. Does anyone have any idea how to stop this from happening? It's driving me crazy.