$ mv .xpra .xpra.old
$ xpra start :7
Entering daemon mode; any further errors will be reported to:
  /home/stroller/.xpra/hex-7.log
$ cat .xpra/hex-7.log
[dix] Could not init font path element /usr/share/fonts/misc/, removing from list!
[dix] Could not init font path element /usr/share/fonts/TTF/, removing from list!
[dix] Could not init font path element /usr/share/fonts/OTF/, removing from list!
[dix] Could not init font path element /usr/share/fonts/Type1/, removing from list!
[dix] Could not init font path element /usr/share/fonts/100dpi/, removing from list!
[dix] Could not init font path element /usr/share/fonts/75dpi/, removing from list!
5 XSELINUXs still allocated at reset
SCREEN: 0 objects of 64 bytes = 0 total bytes 0 private allocs
DEVICE: 4 objects of 16 bytes = 64 total bytes 0 private allocs
CLIENT: 0 objects of 52 bytes = 0 total bytes 0 private allocs
WINDOW: 0 objects of 24 bytes = 0 total bytes 0 private allocs
PIXMAP: 1 objects of 8 bytes = 8 total bytes 0 private allocs
GC: 0 objects of 44 bytes = 0 total bytes 0 private allocs
CURSOR: 0 objects of 4 bytes = 0 total bytes 0 private allocs
CURSOR_BITS: 0 objects of 4 bytes = 0 total bytes 0 private allocs
DBE_WINDOW: 0 objects of 12 bytes = 0 total bytes 0 private allocs
TOTAL: 5 objects, 72 bytes, 0 allocs
4 DEVICEs still allocated at reset
DEVICE: 4 objects of 16 bytes = 64 total bytes 0 private allocs
CLIENT: 0 objects of 52 bytes = 0 total bytes 0 private allocs
WINDOW: 0 objects of 24 bytes = 0 total bytes 0 private allocs
PIXMAP: 1 objects of 8 bytes = 8 total bytes 0 private allocs
GC: 0 objects of 44 bytes = 0 total bytes 0 private allocs
CURSOR: 0 objects of 4 bytes = 0 total bytes 0 private allocs
CURSOR_BITS: 0 objects of 4 bytes = 0 total bytes 0 private allocs
DBE_WINDOW: 0 objects of 12 bytes = 0 total bytes 0 private allocs
TOTAL: 5 objects, 72 bytes, 0 allocs
1 PIXMAPs still allocated at reset
PIXMAP: 1 objects of 8 bytes = 8 total bytes 0 private allocs
GC: 0 objects of 44 bytes = 0 total bytes 0 private allocs
CURSOR: 0 objects of 4 bytes = 0 total bytes 0 private allocs
CURSOR_BITS: 0 objects of 4 bytes = 0 total bytes 0 private allocs
DBE_WINDOW: 0 objects of 12 bytes = 0 total bytes 0 private allocs
TOTAL: 1 objects, 8 bytes, 0 allocs
[dix] Could not init font path element /usr/share/fonts/misc/, removing from list!
[dix] Could not init font path element /usr/share/fonts/TTF/, removing from list!
[dix] Could not init font path element /usr/share/fonts/OTF/, removing from list!
[dix] Could not init font path element /usr/share/fonts/Type1/, removing from list!
[dix] Could not init font path element /usr/share/fonts/100dpi/, removing from list!
[dix] Could not init font path element /usr/share/fonts/75dpi/, removing from list!
Xlib:  extension "RANDR" missing on display ":7".
Xlib:  extension "RANDR" missing on display ":7".
Traceback (most recent call last):
  File "/usr/bin/xpra-2.6", line 6, in <module>
    xpra.scripts.main.main(__file__, sys.argv)
  File "/usr/lib/python2.6/site-packages/xpra/scripts/main.py", line 126, in main
    run_server(parser, options, mode, script_file, args)
  File "/usr/lib/python2.6/site-packages/xpra/scripts/server.py", line 304, in run_server
    import xpra.server
  File "/usr/lib/python2.6/site-packages/xpra/server.py", line 19, in <module>
    import Image
ImportError: No module named Image
xpra: Fatal IO error 11 (Resource temporarily unavailable) on X server :7.
$ xpra list
Found the following xpra sessions:
        DEAD session at :7 (cleaned up)
$

Resolution:

…
>>> Installing (1 of 1) dev-python/imaging-1.1.7
 * Compilation and optimization of Python modules for CPython 2.6 ...    [ ok ]

>>> Recording dev-python/imaging in "world" favorites file...
>>> Auto-cleaning packages...

>>> No outdated packages were found on your system.

 * GNU info directory index is up-to-date.
$ xpra start :8
Entering daemon mode; any further errors will be reported to:
  /home/stroller/.xpra/hex-8.log
$ cat .xpra/hex-8.log
[dix] Could not init font path element /usr/share/fonts/misc/, removing from list!
[dix] Could not init font path element /usr/share/fonts/TTF/, removing from list!
[dix] Could not init font path element /usr/share/fonts/OTF/, removing from list!
[dix] Could not init font path element /usr/share/fonts/Type1/, removing from list!
[dix] Could not init font path element /usr/share/fonts/100dpi/, removing from list!
[dix] Could not init font path element /usr/share/fonts/75dpi/, removing from list!
5 XSELINUXs still allocated at reset
SCREEN: 0 objects of 64 bytes = 0 total bytes 0 private allocs
DEVICE: 4 objects of 16 bytes = 64 total bytes 0 private allocs
CLIENT: 0 objects of 52 bytes = 0 total bytes 0 private allocs
WINDOW: 0 objects of 24 bytes = 0 total bytes 0 private allocs
PIXMAP: 1 objects of 8 bytes = 8 total bytes 0 private allocs
GC: 0 objects of 44 bytes = 0 total bytes 0 private allocs
CURSOR: 0 objects of 4 bytes = 0 total bytes 0 private allocs
CURSOR_BITS: 0 objects of 4 bytes = 0 total bytes 0 private allocs
DBE_WINDOW: 0 objects of 12 bytes = 0 total bytes 0 private allocs
TOTAL: 5 objects, 72 bytes, 0 allocs
4 DEVICEs still allocated at reset
DEVICE: 4 objects of 16 bytes = 64 total bytes 0 private allocs
CLIENT: 0 objects of 52 bytes = 0 total bytes 0 private allocs
WINDOW: 0 objects of 24 bytes = 0 total bytes 0 private allocs
PIXMAP: 1 objects of 8 bytes = 8 total bytes 0 private allocs
GC: 0 objects of 44 bytes = 0 total bytes 0 private allocs
CURSOR: 0 objects of 4 bytes = 0 total bytes 0 private allocs
CURSOR_BITS: 0 objects of 4 bytes = 0 total bytes 0 private allocs
DBE_WINDOW: 0 objects of 12 bytes = 0 total bytes 0 private allocs
TOTAL: 5 objects, 72 bytes, 0 allocs
1 PIXMAPs still allocated at reset
PIXMAP: 1 objects of 8 bytes = 8 total bytes 0 private allocs
GC: 0 objects of 44 bytes = 0 total bytes 0 private allocs
CURSOR: 0 objects of 4 bytes = 0 total bytes 0 private allocs
CURSOR_BITS: 0 objects of 4 bytes = 0 total bytes 0 private allocs
DBE_WINDOW: 0 objects of 12 bytes = 0 total bytes 0 private allocs
TOTAL: 1 objects, 8 bytes, 0 allocs
[dix] Could not init font path element /usr/share/fonts/misc/, removing from list!
[dix] Could not init font path element /usr/share/fonts/TTF/, removing from list!
[dix] Could not init font path element /usr/share/fonts/OTF/, removing from list!
[dix] Could not init font path element /usr/share/fonts/Type1/, removing from list!
[dix] Could not init font path element /usr/share/fonts/100dpi/, removing from list!
[dix] Could not init font path element /usr/share/fonts/75dpi/, removing from list!
Xlib:  extension "RANDR" missing on display ":8".
Xlib:  extension "RANDR" missing on display ":8".
Xlib:  extension "RANDR" missing on display ":8".
X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  118 (X_SetModifierMapping)
  Value in failed request:  0x17
  Serial number of failed request:  21
  Current serial number in output stream:  21

xpra is ready.
909 ~ $ xpra list
Found the following xpra sessions:
        LIVE session at :8
$

It's handy for doing distributed builds and easily updating the website, but it pollutes the repo with binaries (making it huge to checkout) and makes it harder to read the history.

after running "winswitch_applet" got the folowing failure feedback:

Traceback (most recent call last):
  File "/usr/bin/winswitch_applet", line 3, in <module>
    from winswitch.client import applet_wrapper
ImportError: No module named winswitch.client

System:
lsb_release -a
LSB Version:    core-2.0-ia32:core-2.0-noarch:core-3.0-ia32:core-3.0-noarch:core-3.1-ia32:core-3.1-noarch:core-3.2-ia32:core-3.2-noarch
Distributor ID: Debian
Description:    Debian GNU/Linux unstable (sid)
Release:        unstable
Codename:       sid