From build log https://launchpad.net/ubuntu/+source/gnomeradio/1.8-2ubuntu2/+build/3569989/+files/buildlog_ubuntu-quantal-i386.gnomeradio_1.8-2ubuntu2_BUILDING.txt.gz it seems that gnomeradio use GLib deprecated thread API.
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gui.c:1194:5: warning: 'g_thread_init' is deprecated (declared at /usr/include/glib-2.0/glib/deprecated/gthread.h:259) [-Wdeprecated-declarations]
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g_thread_init has been deprecated since version 2.32 and should not be used in newly-written code. This function is no longer necessary. The GLib threading system is automatically initialized at the start of program.
Status changed to 'Confirmed' because the bug affects multiple users.