Hi, Firefox uses the Windows native dialog boxes by default. You can try to check this in [https://support.mozilla.com/en-US/kb/Safe%20Mode Safe Mode]. [http://kb.mozillazine.org/Problematic_extensions Problematic Extensions] [https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes Troubleshooting Extensions and Themes] [http://support.mozilla.com/en-US/kb/Uninstalling+add-ons Uninstalling Add-ons] [http://kb.mozillazine.org/Uninstalling_toolbars Uninstalling Toolbars] Safe mode disables the installed '''Extensions''', and themes ('''Appearance''') in '''Tools''' ('''Alt''' + '''T''') > '''Add-ons'''. Hardware acceleration is also temporarily disabled - the manual setting is '''Tools''' > '''Options''' > '''Advanced''' > '''General''' > '''Use hardware acceleration when available'''. [https://support.mozilla.org/en-US/kb/Options%20window%20-%20Advanced%20panel?as=u Options > Advanced]. All these settings/add-ons can also be individually or collectively disabled/enabled/changed in Firefox normal mode to check if an extension, theme or hardware acceleration is causing issues. [https://support.mozilla.org/en-US/kb/Options%20window Options] If the problem persists, you may have to change the settings in Direct Folders or any other Windows enhancement/theme software.

Why to work on safe mode sir ?

Safe mode also disables any extensions you may have installed to override the generic dialog boxes.

I started Firefox in safe mode, there was nothing, no add-ons, no toolbar nothing and I followed you advice for the other suggestions. Nothing it does not want to work, the funny side is that it works fine in Firefox 6.0.1 and all the other previous Firefox I have had since ver 2.0. And beside the add-ons I don't have any toolbars except the Firefox Toolbar to which I have added a few buttons. Thanks anyway, I will keep working on this.