As much as I could test it, the problem didn't arose again with: thunar 1.6.3-1 and with those plugins: thunar-archive-plugin 0.3.1-2 thunar-media-tags-plugin 0.2.1-1 thunar-vcs-plugin 0.1.4-2 thunar-volman 0.8.0-2 And as I could have read it, I guess the guilty was thunar-vcs-plugin.