When downloading files in build 4048 the bytes completed number is way off. Here is a screenshot of the problem. The file is about 2.9MB as you can see from the properties dialog, however the transfer tab shows that I downloaded 140MB. I also tested it with smaller files and it seems to have the same problem. The problem does not seem to exist when uploading files.

What protocol do you use? Webdav, FTP or SFTP?

It appears to occur on both FTP and SFTP downloads. I do not have a WebDav server to test with.