/usr/bin/remmina:11:g_type_check_instance_cast:remmina_connection_holder_toolbar_autofit_restore:g_timeout_dispatch:g_main_dispatch:g_main_context_dispatch

The Ubuntu Error Tracker has been receiving reports about a problem regarding remmina. This problem was most recently seen with package version 1.1.2-3ubuntu2, the problem page at https://errors.ubuntu.com/problem/cb8d8108641b18fad9da69870c28fe6f6702b7cc contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker you can request it at http://forms.canonical.com/reports/.