When i submit a form with more than 15 "file" type inputs causes warning message: "File Upload Mime headers garbled ptr: [ in <b>Unknown</b> on line 0".

The html file looks like:
<FORM METHOD="post" ENCTYPE="multipart/form-data" ACTION="process.php">
<INPUT TYPE="hidden" NAME="id" VALUE="123">
File 1: <INPUT TYPE="file" NAME="file1"><BR>
...
File 16: <INPUT TYPE="file" NAME="file16"><BR>
<INPUT TYPE="submit" VALUE="submit">
</FORM>

I compiled php with:
autoconf
./buildconf
./configure --with-apxs=/usr/sbin/apxs --with-mysql=shared,/usr --with-gd=/usr

please contact me by email if want further info.