I am trying to build a simple image/photo gallery based on this tutorial: http://blip.tv/file/971610
All has gone well so far -- I have created an image content type, with an image field. I have specified settings for thumbnail and gallery versions of the uploaded images.
When I attempt to upload images, they are being uploaded to the following directory:
'/sites/default/files'
...and the thumbs are being created in:
'/sites/default/imagefield_thumbs'
However, the page upon which my images appear is looking for the thumbs in:
'/sites/default/files/imagecache/image_thumb/'
This is weird -- and I don't see anywhere that I can define where to upload images to, or where to create the thumbs!
So... help me if you can!
Thanks!

Comments
Imagecache always
Imagecache always creates/stores its images in a subdirectory of the imagecache directory. The subdirectory is named for the preset that created the image. The sites/default/files/imagefield_thumbs is where the default thumbnails are being created when you upload the image. Since you seem to be using imagecache to create your own thumbnails then those default thumbnail images are not being displayed.
What you're describing is the expected behavior but it's not clear why it's a problem -- do you need to be able to change the directory where the thumbs are stored?
Also
Check your permissions in that folder, it you are not seeing what you're expecting, chances are you've got the wrong permissions. Drupal needs permission to create the files within the sites/default/files/imagecache/... folders
i got same issues
i tried to upload the user profile picture on sites/default/pictures -> set in user settings, but it give link /sites/default/imagecache/thumb/pictures after the upload...
the upload success but it generates invalid link... any one can help me?