If the page URL ends with something like ...&page=Last#-1457292595, the Uploader dosn't work, except Firefox (at least 3.6.3).

In IE 7 and Chrome it just postbacks the entire page when pressing Upload button.

In Opera the uploading hangs (see screenshot).

 

This occurs both in Auto and IFrame mode, ManualStartUpload=false

 

Thanks,

Alexander