I am deploying printers via iPrint via a Zen Policy and have noted slow performance, and at times the printers are not getting added at all. Having a look at the network traffic I see a significant number of IPP response [Malformed Packet].

Following the TCP Stream it starts out as follows;
Accept-Charset: UTF-8,ISO-8859-1
Accept-Language: en, en-us
User-Agent: Novell iPrint Client - v05.12.00
Cache-Control: no-cache
Pragma: no-cache
Host: staffprinting.unb.ca:631
Upgrade: TLS/1.0
Connection: Upgrade

HTTP/1.1 101 Switching Protocols
Upgrade: TLS/1.0, HTTP/1.1
Connection: Upgrade

We are running OES Netware 6.5 SP7.. Are there any known performance issues? Specifically what should I be looking for?