[Bug 10548] New: UltraVNC Viewer works fine at first but becomes always unresponsive after ~10 minutes

http://bugs.winehq.org/show_bug.cgi?id=10548

Summary: UltraVNC Viewer works fine at first but becomes always
                    unresponsive after ~10 minutes
           Product: Wine
           Version: 0.9.49.
          Platform: PC
               URL: http://www.uvnc.com/
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-gui
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

I use UltraVNC because with it and SingleClickVNC it is easy possible to
support people without installation, with only one file and encryption in
listen mode.
It works fine at first but always after around 10 minutes UltraVNC becomes
unresponsive. Systray icon blends out for some time If I click on it and I can
only see new viewer updates around my mouse.
If I start it in console I get many "err:region:CombineRgn Invalid rgn=(nil)"
messages after this happens.
This only seems to happen if window is in use with mouse clicks and so on.

If this happens I have to close UltraVNC Viewer which is possible after some
waiting but the problem is that the listen mode port is in use for around 30
seconds or more so I have to wait until restart. Should I make another bug
report for this issue or is this a Linux problem?
So every time this happens the customer have to wait around a minute until I
can support him again and this every ten minutes.

This happens with every UltraVNC version I have used until now in Wine.
(1.0,1.2 and 1.4 rc5).

It has nothing to do with listen mode since it happens with UltraVNC Viewer and
a local Xvnc-Session too. Important is to use the session otherwise it wouldn't
happen at least not so fast.

I am using Ubuntu Gutsy Gibbon 7.10 with winehq repository.