I followed the mirror links (from http://www.imgburn.com/index.php?act=download#) to downloaded ImgBurn 188.8.131.52 . All of the mirrors had incorrect checksums. What was even more weird was they were all the same.
Checksums should have been:
But I got:
MD5: n/a - didn't try
I tried dddwnld, softpedia, majorgeeks and betanews - all failed with the same checksums.
I jumped to the imgburn domain for the download and finally got a good one that matched the checksum.