My copy of Photoshop seems to have a weird glitch in it. Whenever I start a new document in transparent mode the fill option doesnt work. The history says fill was used, however the image stays transparent. I have resinstalled it numerous times today, and deleted all the registry keys with the word photoshop in them. Im clearly missing something because whenever I reinstall my preferences are the same, even though I chose to delete them when I uninstalled. So I guess my question is does anyone know where the file saving my preferences is hidden? (the preferences regkey was included in the delete, and I delete all photoshop folders in the Adobe folder. Running Vista if that by chance helps.

Thanks