[web2py] Downloaded file size differs from the original file size.

[Changju]

Hi All,
 
I put a file on the static folder, let say 'testApp/static'. 
And I download the file on static folder, the downloaded file differs from 
the original file in size.
Original file size is 15,227,904 and 15,096,832 for downloaded file.
 
Windows Vista
Version 1.99.7 (2012-04-09 09:21:21) dev