HTTP error when adding images with Flash

I have tried upgrading my wordpress hoping that it will one day be able to load up images in flash but I still keep on getting the HTTP error. Sometimes it loads up the first image before the errors start showing up. I have tried everything but still I cannot find a solution and here is a list of what I have tried here

A clean wordpress installation on the same host usually is able to load flash images using the media uploader.

I am running a news website and sometimes I need to add 10 images onto one post and I get a lot of articles to post to look for the images one by one is taking up most of my time.

I would appreciate any advice and thank you in advance.