diff --git a/spectrum/src/sample2.cfg b/spectrum/src/sample2.cfg
index 46b52d9fe4e5aa5db6aecbab4b4da8c1041cbf03..0201bc2e45327fbbbd9f159299bada36781cd9ab 100644
--- a/spectrum/src/sample2.cfg
+++ b/spectrum/src/sample2.cfg
@@ -16,7 +16,7 @@ server = 127.0.0.1
 port = 5222
 
 # Interface on which Spectrum listens for backends.
-backend_host = localhost
+backend_host = 127.0.0.1
 
 # Port on which Spectrum listens for backends.
 # By default Spectrum chooses random backend port and there's
@@ -31,12 +31,16 @@ backend_host = localhost
 
 # Number of users per one legacy network backend.
 users_per_backend=10
+# For Skype - must be =1
+#users_per_backend=1
 
 # Full path to backend binary.
 backend=/usr/bin/spectrum2_libpurple_backend
 #backend=/usr/bin/spectrum2_libcommuni_backend
 # For skype:
 #backend=/usr/bin/xvfb-run -a -s "-screen 0 10x10x8" -f /tmp/x-skype-gw /usr/bin/spectrum2_skype_backend
+# For skype if instance drops privileges (`user`/`group` options) we should set writable HOME folder for D-BUS:
+#backend=/usr/bin/env HOME=/var/lib/spectrum2 xvfb-run -a -s "-screen 0 10x10x8" -f /tmp/x-skype-gw /usr/bin/spectrum2_skype_backend
 
 # Libpurple protocol-id for spectrum_libpurple_backend
 protocol=prpl-jabber