Warnings in syslog

Solution 1:

• Line 1 and line 3 are related to bluez, which manages Bluetooth. Judging by the line bluez error getting default adapter: No such adapter, it sounds like your computer doesn't even have a Bluetooth adapter, so this should be harmless. I doubt it's related to your wifi issues.
• I'm not sure about line 2, but it seems to be harmless (in this bug report someone said "the GDM warning is a red-herring and causes no other symptoms"; "I get the seat-id error, but my GDM is working fine, so I think it is unrelated.")

• Line 4 is a harmless warning message in a GTK+ program. Carpetsmoker on the FreeBSD forum said, "This is a warning and not an error, this is actually a programming fault and not a configuration fault. Ignore it."

  I believe just means the programmer was lazy and forgot to call a utility function in the GUI toolkit:

  # Place after association to hbox/vbox to avoid the following error:
  # GtkWarning: gtkwidget.c:5460: widget not within a GtkWindow
  button_close.grab_default()