Uploaded files from forms do not appear in the defined temporary directory; however, PHP acts as if it was uploaded fine, even assigns a temporary name
to it:

Array ( [file] => Array ( [name] => headline.gif [type] => image/gif
[tmp_name] => C:\Apache\php\uploadtemp\php102D.tmp [size] => 17936 ) )

The problem is, no such file exists in C:\Apache\php\uploadtemp\.

My temporary directory is specified like this in the PHP.ini:

upload_tmp_dir = C:\Apache\php\uploadtemp\

I have also tried upload_tmp_dir = C:\Apache\php\uploadtemp

and not setting a temporary directory at all to force php to use the system default. 

There is nothing spectacular about my setup, its simply Apache with PHP running as a module.