I am currently working on integrating the SWFUpload library with Joomla 1.5. All seems to be working well except till the portion whereby the file is uploaded.
I get the response by the system to do a login and this response is returned to me via uploadSuccess(file, serverData) method in the SWFupload handlers.js file. The session is not maintained apparently when I do the post.
I am currently referencing http://docs.joomla.org/Creating_a_file_uploader_in_your_component for possible resolutions to this bug.
Now I am heading off to work as the Dancing Christmas tree. Hopefully I would solve it when I get back in the evening.