Every jpg, png, pdf etc I try fails, but I'll send you two jpegs I just tried to upload again now.
In case I'm missing something obvious:
I click on the insert image icon (tree in a frame), in quick reply or quote or go advanced. Choose 'from computer', choose a file, click upload and get the 'upload of the file failed' message.
Worked a few weeks back, now never works. Today I tried to log in from chrome instead and the site claimed my password was incorrect.