this was originally opened as a comment to bug 17006, but I feel it's a completely separate issue.

Olivier- my quick advice is to try to update your server at your earliest possible convenience and see if that helps remedy your situation

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Hi,

may be another behavior related to that bug.

I purchased last week the Duet and a Synology DS411+ (DSM 3.0-1354). 
Everything connected to a 1 Gbit wired LAN (cat 5e and Netgear GS608), with the
same subnet mask, and to a 100-Mbit Belgacom Bebox2 router for accessing the
Internet.  I then created a mysqueezebox account and installed the Squeeze
Server package on the Syno (Version : 7.5.3 - r31792 @ Mon Jan 24 08:21:38 MST
2011).  At the first connection, the controller (and may be the receiver ?)
upgraded to the new look'n feel (Version : 7.5.3 - r9377).

Every evening, I face to the following: after listening to music for 2-3 hours
(internet radio or *.wav cd collection), the controller seems to lose the
connection to the receiver.  The Pause button doesn't work anymore and I cannot
deactivate the receiver because the controller display the "activate squeezebox
receiver" command instead of "deactivate...".  Pushing on any button causes a
connection trial that fails in any case: the controller/receiver is unable to
connect to the DiskStation nor to mysqueezebox.com.  But the music is still
playing !

At that moment, I only want to stop the music and deactivate the receiver...
which seems impossible.  There are however 2 things I can do:
1. from a computer, connect to the Squeeze Server and stop the music steam...
and wait.  After a few minutes, things seem back to normal, or,
2. remove the outlet of the receiver, and remove the battery from the
controller (sounds like an MS-Windows reset).  After reconnecting, everything
works fine.

To me, it seems something at some point is causing a confusion, from controller
point of view, regarding the state of the receiver.

Not really disturbing, just the felling it doesn't work perfectly.

Regards