I'm having a strange problem recently with one of the WP sites I'm running.
When I try to upload image to the server, it goes all the way to 100% and then basically freezes. I can see in the server access log that the script async-upload.php does load over and over (even if just one file is being uploaded). Memory is set to 256M and file uploads to 48M.
After the unsuccesful upload I can see the file in the library multiple times (although physically the file is present only once on the hard drive) and none of the thumbnails have been created.
I have the same wordpress installation on the same server (different subdomain) and it works without problems.
I tried to disable all the plugins and activate the default theme, but it didn't help.
Can anyone help me please?
Thank you in advance.