No error message when file size is too big

Issue Summary

I just tried uploading a file that was bigger than my php.ini file allows (I didn't realize it when I was doing it). It tried to upload for a bit, then just brought me back to the create flash node page, with no error message or any indication that it had failed (or succeeded or anything). I (or rather my boss), realized that the php.ini may be limiting file upload sizes, so I increased the size in the php.ini - problem solved. However, when we pass this on to our clients, if they try to upload a file over the allowed size, they will have the same problem, and will have no error, and I know we will get complaints on this. Is there any way to build in an error that says the filesize was too big, or that the file upload failed? Thank you.