[Gambas-user] Severe problem with update...

[ISS Boss]

I have 76 updates -- ALL from Gambas.  I am currently running Gambas 
3.5.2 and apparently that is as far as I can go unless someone can tell 
me how to get past this error from the Update manager:

"Requires installation of untrusted packages."

"This action would require the installation of packages from not 
authenticated sources"

Following that, my only option is to close the error window, which 
resets the Update Manager back to the start point again, displaying all 
76 updates available.

My system:

[System]
Gambas=3.5.2
OperatingSystem=Linux
Kernel=3.5.0-48-generic
Architecture=x86
Distribution=Ubuntu 12.04.4 LTS
Desktop=GNOME
Theme=QGtk
Language=en_US.UTF-8
Memory=2017M
[Libraries]
Cairo=libcairo.so.2.11000.2
Curl=libcurl.so.4.2.0
DBus=libdbus-1.so.3.5.8
GStreamer=libgstreamer-0.10.so.0.30.0
GStreamer=libgstreamer-1.0.so.0.1.0
GTK+=libgtk-x11-2.0.so.0.2400.10
OpenGL=libGL.so.1.2.0
Poppler=libpoppler.so.19.0.0
Qt4=libQtCore.so.4.8.1
SDL=libSDL-1.2.so.0.11.3