File download hangs every-time, sometimes at the start or at the middle of the file download resulting an incomplete download every-time. Tried - places.sqlite to places.sqlite.old ( Source- https://support.mozilla.org/en-US/kb/disable-or-remove-add-ons) Tried - Locate the browser.download.manager.scanWhenDone preference and double click it to change the value to false. ( Source - https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding#w_disable-virus-scan-in-firefox-preferences) Tried - Browse For Folder window, choose a new folder location. ( Source https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding#w_choose-a-different-download-folder) Tried - Disabled my AVG Internet security 2013 before download but no result. Still now no solution problem remain the same