Vista - MSNP12: disconnecting after UUX or QRY

While working on an implementation of MSNP12 for PHP, I found that the
Notification Server is disconnecting me (signing me out) as soon as I
send a UUX command with the PSM and MachineGuid. It does not sign me out
if I do not try to set my PSM etc, by omitting the UUX.
[ Tweener Authentication etc, then: ]2008-10-28T19:51:36.0000000+01:00
<<< SYN 7 2008-10-29T11:19:50.61-07:00 2008-10-26T04:41:38.46-07:00 5 2
<<< GTC A
<<< BLP AL
<<< PRP MFN My%20Name
<<< PRP MBE N
<<< PRP WWE 0
<<< LSG Favorites dc12d58c-dee9-44d3-****-0d93e****d50
<<< LST N=mynetx@xxxxxx F=mynetx
C=8418cb1c-e95c-4810-****-49909****213 11 1
3d4ad801-712a-4a0a-****-ed203****655<<< CHG 8 BSY 1073741856
<<< MSG Hotmail Hotmail 289\r\n
MIME-Version: 1.0\r\nContent-Type: text/x-msmsgsinitialmdatanoti...
<<< ILN 8 NLN mynetx@xxxxxx mynetx 2520567852 %3Cmsnobj%20C...
<<< UBX mynetx@xxxxxx 620\r\n
<Data><PSM>Minor WLMStatus update</PSM><CurrentMedia></CurrentMe...<Data><PSM>Last test: 30 Oct 2008 21 23 57</PSM><CurrentMedia>
</CurrentMedia><MachineGuid>11EBCC45-6F60-4BBB-****-FCC61****CF7
</MachineGuid></Data>
<<< UUX 9 0
[ Server closes connection ]


I also get disconnected after having received a confirm command of a
successfully completed QRY challenge:


[ Normal protocol connection, including switchboard invites, etc.,
everything just working fine... until now: ]

<<< CHL 0 2107828104148792253724ae42ad2504abd89f67997146c293c7
<<< QRY 15
[ Server closes connection ]


Note:
I do calculate the hash correctly, as I am *not* receiving
a 540 error, but a successful "QRY" reply before the notification server
disconnects.

Any ideas why the server is disconnecting me in these 2 cases?
Thanks for your research,
mynetx

Solved.
Jonathan Kay pointed me to a thread at Fanatic stating that problems
will arise when I add an additional \r\n to a payload command, like UUX
and QRY are.

Thanks mate!
mynetx


mynetx wrote: