it seems the on 4.0.1 does not always read pictures GPS Informations.

if a picture taken with the Camera it always become a tag.
but synced images (iTunes) never (i guess this is because itunes rerender the images and all exif data get lost)

so i try copy images with EXIF-GPS data to the Phone.
no tag.
after hours of trying i deleted /var/mobile/Media/PhotoData/Photos.sqlite
and whooha ... some images had tags ... but the dates are wrong because i renamed the image manually to IMG_8800.JPG

it also seems to work if a image got on to the phone by email added by "add to Photo Roll" function.

does anyone know how the scan for tags can be triggert externaly ?
and how the images need to get onto the phone to make this work ?