Importing photos from Picasa to Facebook always fails

Over the past few months I’ve tried numerous times to import pictures into Facebook from Picasa using the import option that’s part of Facebook. Each time I try I almost always get “Importing from external sites failed. Please try again later”. I think out of ~50 times I’ve tried it’s managed to work only twice but it seems more or less broken with no additional information as to what’s wrong nor any way to actually debug the problem. Here’s what I’m seeing: image

The above screenshot is from the Import option on the Profile tab. I’ve posted here about it but does anyone know who/how to contact Facebook to report this problem?