When uploading a file in a post, if the file is too large (Maximum Attachment File Size is 10,000kb), the file upload starts but then just sits there. No error message is displayed to say your file is too large. I changed Maximum Attachment File Size to 50,000, then uploaded a 2.1mb image, and the upload gets to 100%, but then nothing happens. I can't click Cancel either. Maximum Attachment Image Dimensions is set to 1200 x 1000. I assume this is a problem on my server but would appreciate help on what to say to my web host.