Quick Upload doesn't work

Hello,

My environment is Drupal 6.4, FCKEditor 2.6.3 and IMCE 6.x-1.1.

The file browser integration works fine, but when quick uploading an image I can't get the upload to complete. The "working"-type visual just keeps going and nothing else happens...

I've tried with images that are very small (68 k) and which only take a couple seconds to do through the direct method (domain.com/imce). But after a few minutes of waiting for the same image using Quick Upload I have to give up. I've tried with 3 different images with no success.

Thanks for any assistance,

Jim