Description:
------------
i moved from my old server to a new faster one ...

everything works fine except uploading files

move_uploaded_file produces NO errors or NO warnings ... but the file does not reach its destination

i can read /fpassthru it from the $_FILES['tmp_name'] and i can copy it ... just move_uploaded_file does not work

safe mode is on on the old server - off on the new server

Reproduce code:
---------------
$upload_dir = "tmp/";
$filename =  $_FILES['filetoupload']['name'];


/*
if (copy($_FILES['filetoupload']['tmp_name'],$upload_dir.$filename)) {
// this works

}
*/

if (move_uploaded_file($_FILES['filetoupload']['tmp_name'],$upload_dir.$filename)) {
// this does not works but shows no errors
echo "done"; # this is shown
}



Expected result:
----------------
a file in my tmp/ directory ... but it doesnt reach it

Actual result:
--------------
the tmp/ directory stays empty when i use move_uploaded_file (copy works though)