After doing a WordPress 2.6 upgrade this weekend I found that an issue I have uploading images is focused to Macintosh. WordPress is a server side software application that runs this website.

There are several web post like these (assuming they are on macs)

WordPress › Support » 2.6 Image Uploader – Will Upload But Not Insert

http://jobs.wordpress.net/2008/07/24/need-wordpress-26-help/

I opened up Parallels running XP and Firefox and the problem DID NOT exist.

(I have the latest Flash 9)