Increase the size limit to at least 30MB
Think 2MB should be the limit at least ...
Most of my images are 500kb - 1mb. Atleast increment to 1mb for now and see how it goes...
is this a weird thing having a images as big as 30Mb? try to have a transparent background with some clouds for example, this page-width and you will end up with a images with a size of +- 30 Mb.
For a single image? Not as large as 30MB but a 5MB limit should suffice. If this is for a zip file or something, please excuse my comment.