6
Sorry, a few more questions:
Which version of xtorrent are you using?
Are you using PHP5?
The reason I ask is that that xtorrent 3.13 still uses $HTTP_GET_VARS which has been 'replaced' by $_GET in PHP5. Most recent releases of PHP5 turn off register_long_arrays so it won't work with a 'out of the box' installation of PHP5. You will either have to turn on the register_long_arrays directive or better yet, modify xtorrent to remove the $HTTP_GET_VARS with $_GET and do the same for any $_POST values - which are the ones that sound like they're causing you problems.