maglub

I had a similar problem, being able to upload some pics but not others.
The flash based upload did not give me any hints at all, but when disabled I got an error message aying that the file size of the selected image exceeded upload size in php.ini.

Upload failed! The uploaded file exceeds the upload_max_filesize directive in php.ini

I edited this in /etc/php.ini to 10M and restarted the webserver.

Now I can upload all images I like, but opted to resize all pics to 1024×768 before uploading anyways, so that the load on a download of the pic will not be overly large.

//magnus