File uploads cease to function

Hello, I have been using the PHP 4.0.3 file upload mechanism for about 9 months now. The other day it ceased to work. In the location where I copy the uploaded file too, a file is created with the appropriate name, but its file size is 0. All file functions, return true on it is_uploaded_file() move_uploaded_file($userfile, $my_dir); file_exists($userfile) and file_exists($my_new_name) It seems that the content of the file is not being sent, or maybe it is, but getting lost somewhere Can anyone help? None of the code was modified at all, as I am the only one with access to the machine. Thanks in advance /Cody Caughlan