Http Error When Uploading Media Image Files

wp4.4.2 Just realised I am having same error. Used to work fine and think my other sites are having same problem
trying to upload a graphic .jpg 278KB file
browser’s built-in file uploader gives 500 error
multi-file uploader gives HTTP error.
Just realised that fails when graphic is greater than 135KB even though uploader shows max size for upload to be 8MB

Sorry for the delay been a bit busy lately.
As you suggested I have created the failure again and here is the error log which looks promising for detail
[Fri Feb 05 10:31:35.589912 2016] [fcgid:warn] [pid 3974] [client xx.yyy.zz.aaa:53072] mod_fcgid: HTTP request length 131737 (so far) exceeds MaxRequestLen (131072), referer: http://mysite.com/wp-admin/media-new.php

Well, the error is pretty straight about it. The upload request you make exceeds the maximum allowed size. Now I know that 135kb should be small enough already, so I guess the best option is to forward the error to your system administrator so they can check it out.