I move /usr/share/qt/doc to /usr/share/qt/doc-backup to avoid this annoying bug in sqlite(see here http://bugreports.qt.nokia.com/browse/QTCREATORBUG-315?page=com.atlassian.jira.plugin.system.issuetabpanels%3Aall-tabpanel ).
I move /usr/share/qt/doc to /usr/share/ qt/doc- backup to avoid this annoying bug in sqlite(see here http:// bugreports. qt.nokia. com/browse/ QTCREATORBUG- 315?page= com.atlassian. jira.plugin. system. issuetabpanels% 3Aall-tabpanel ).