Don't sweat it.
Sometimes it just takes longer to have a picture or gallery approved, that's all. There has probably just been alot of uploads lately or something.
I remember when fixing around with my Brickshelf a while back, it took about 2 weeks for them to approve my minifigs gallery, but it turned out fine in the end.
If there are alot of pictures in a folder, I think this lengthens the approval process, since there are more images to check. If they didn't like something about your photos, they would just delete them.
No worries.
EDIT:
Avast! You've beaten me to the punch, Thomas!
~Amanda