For my next bug... Upload filename gets blanked out

In the form below, when I specify a file to upload (in $filename), it gets blanked out by the time I hit the Upload button and the page refreshes. My test file is a text file that certainly does *not* exceed the max_file_size (it goes to about 27 k). <FORM ENCTYPE = "multipart/form-data" ACTION = "index.php?page=Uploadfile" METHOD = "POST"> <TABLE BGCOLOR = "#000000" BORDER = "0" CELLPADDING = "0" CELLSPACING = "0"> <TR> <TD ALIGN = "CENTER"> <DIV CLASS = "title">Upload</DIV> <SPAN CLASS = "header">Upload (filename):</SPAN> <INPUT TYPE = "FILE" NAME = "filename"> <INPUT TYPE = "HIDDEN" NAME = "MAX_FILE_SIZE" VALUE = "102400"><BR><BR> <INPUT TYPE = "SUBMIT" VALUE = "Upload"> </TD> </TR> </TABLE> </FORM>