How to disable Firefox 20 new feature: Flashing green download arrows

Firefox 20 will be officially available in less than a week. Major change in Firefox 20 is the new Downloads Panel which flashes green arrows *every time* you download a file. Useful on first use, perhaps. But if you do not want to look at the green flashing arrows *each and every time* you download anything in the future, the only way out is to disable the new Panel and continue using the old download function just as you always have.


• Firefox 20 > To disable Downloads Panel so it doesn't flash every time you download a file:

Type this in address bar:
about:config
> browser.download.useToolkitUI > Double click on it to change its value to True >
View > Toolbars > Customize > Drag the Downloads Button into Customize Toolbars window > Done > Restart Firefox

The new Downloads Panel also appears to always retain previously completed downloads.

Disabling it will make this work again so that the already completed downloads are not displayed. So that only downloads in progress are displayed:

about:config > browser.download.manager.retention >
double click on it and change its value to 0
so that downloads are removed from the list of downloads upon completion.