First I try to use Wireshark (free, http://www.wireshark.org) but string search don't work for me, then check more programs and find nice and small I/O Ninja (not free , http://ninja.tibbo.com I use Plain Text view, but don't have uncompress gzip stream feature).
I have that problem with all pictures. Now I save my avatar and try send him but still the same (without account show links, with account don't show).
both, free and account, upload values were correct ... don't worry ... I will check it again. Please, can you send me that picture (eg. mail) so I can try