I am experiencing the same problem. I installed WordPress 2.6.2 and everything worked fine for a couple days. The changes I made prior to the problem appearing were: install new theme (Esther) and setup URL Rewrites.
I have done the following since the problem appeared:
- Checked my flash and browser version:
Flash: MAC 9,0,124,0
Browser: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:220.127.116.11) Gecko/2008092414 Firefox/3.0.3.
Even though they are up to date I uninstalled and re-installed my flash just for kicks, and still no joy.
- Tried clearing browser cache and that did nothing.
- Remove URL Rewrites, upload still failed.
- Tried a suggested fix to add a mod_security rule in the .htaccess file:
and this did not work so I thought I would add the path to the file in the rule so it read /wp-admin/async_upload.php and still no change.
So I also would appreciate anyone's help to clarify this problem, because the main reason I setup this blog was so my wife could use it post stuff about our family but she hates using it because of the bugs. Here is the site: millermoments.net blog