Problem with communication PDA

From: Siebie (ceesboofUNSPAM_at_hotmail.com)
Date: 12/30/04 

Date: 30 Dec 2004 13:10:14 GMT

I am using a PDA to exchange data with my server.
I use the POST-method.
The messages (XML-contents) are always short, about 3K. I rarely
encounter any problems.
But now I try to send a larger message (XML-contents, about 28K), and
every now and then the PHP-script seems not to start. The POST_max_size
is 8Mb, so that should not be a problem.
Now I want to send a 30K file. Sometimes, it is accepted, and sometimes
not. The same goes for other files > 16K.
This is not depending on the contents of the file.

The PDA uses XMLHTTPRequest object ("Microsoft.XMLHTTP") to send the
POST. Data is sent as "Content-Type=application/x-www-form-urlencoded".
 
Is this a PocketPC problem, PHP (v 4.2.3) or Apache (1.3.27)
problem.....?