After a fresh install and update of Leap 42.2, there seems to be no freezing issue. I believe the issue might be related to the specific version of Firefox that happened to be on the install that was freezing. That version had the following package: MozillaFirefox-50.0.2-42.2.x86_64 The recently installed version, without the problem, had the following package: MozillaFirefox-50.1.0-45.1.x86_64 This bug should be closed, as I am unable to identify a specific problem related to openSUSE itself.