413: Request Entity Too Large on HTTPS

413: Request Entity Too Large on HTTPS

I've seen several questions with the same problem and most propose the
following solutions
increse the post_max_sizein the php.ini file (set to 8M)
increse upload_max_filesize in php.ini file (set to 8M)
set the LimitRequestBody directive in httpd.conf (set to 8388608 = 8M)
none of them worked for me!
Then I restarted the apache service but even still the same problem. the
form I am trying to send only has 5 fields (two checkboxes, 2 selects, one
file), I'm uploading a file of 653KB and dont work (work if the file is
less 80K), never had this problem before.
Setup:
ArchLinux
x86_64 Linux 3.10.6-2-ARCH
PHP 5.4.18
Apache/2.2.25
Symfony 2.2.5
Virtual host with SSL enabled