When connecting to distant servers over a slow connection, just don't bother trying to tunnel the sound with PA, it will not work.

I'm seeing the following error trying to connect from a 0.12.17 client on lucid to a 0.12.17 server on gentoo:

Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/twisted/internet/gtk2reactor.py", line 249, in run
    self.__run()
  File "/usr/lib/python2.6/dist-packages/twisted/internet/gtk2reactor.py", line 120, in wrapper
    return real_cb(real_s, condition)
  File "/usr/lib/python2.6/dist-packages/twisted/internet/gtk2reactor.py", line 283, in callback
    self.simulate() # fire Twisted timers
  File "/usr/lib/python2.6/dist-packages/twisted/internet/gtk2reactor.py", line 293, in simulate
    self.runUntilCurrent()
--- <exception caught here> ---
  File "/usr/lib/python2.6/dist-packages/twisted/internet/base.py", line 778, in runUntilCurrent
    call.func(*call.args, **call.kw)
  File "/usr/lib/pymodules/python2.6/winswitch/client/server_line_connection.py", line 603, in start_login
    self.add_current_user()
  File "/usr/lib/pymodules/python2.6/winswitch/client/server_line_connection.py", line 397, in add_current_user
    self.handler.binencode(settings.xkbmap_query),
  File "/usr/lib/pymodules/python2.6/winswitch/net/protocol.py", line 90, in binencode
    return	binencode(data, self.binary_encodings)
  File "/usr/lib/pymodules/python2.6/winswitch/util/format_util.py", line 21, in binencode
    return	BASE64_PREFIX + base64.b64encode(data)
  File "/usr/lib/python2.6/base64.py", line 53, in b64encode
    encoded = binascii.b2a_base64(s)[:-1]
exceptions.TypeError: b2a_base64() argument 1 must be string or read-only buffer, not None

The connection shows up as successful, but no applications or sessions are available. This problem also happens with 0.12.16, but goes away if I downgrade the client to 0.12.15.

As reported in ​https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=772390

checkbashisms (from the 'devscripts' package) found the following:

possible bashism in ./usr/lib/winswitch/bin-override/xdg-open line 28
(should be 'b = a'):
		  if [ $e == 0 ]; then

Not using bash (or a Debian Policy compliant shell interpreter that doesn't provide such an extra feature) as /bin/sh is likely to lead to errors or unexpected behaviours. Please be aware that dash is the default /bin/sh in Debian.

Hints about how to fix bashisms can be found at: ​https://wiki.ubuntu.com/DashAsBinSh