Just to signal that Adblockplus 2.6.6 hides the download status bar (bottom left) in Thunderbird 24.6.0 under Windows 7 pro. This may have been the case also in the earlier versions since I had this trouble since long (the bar showing sometimes and sometimes not for unknown reasons) and it took me long (switching off addons one by one) to detect where the trouble comes from.
When Adblockplus is activated, the "not read' and 'number of message' counter shift from bottom right to bottom left in the status bar, as the other icons (e.g. clippings), thus hiding the 'download progression bar'
The provisory solution has been to desactivate Adblockplus from Thunderbird and to wait for a fix. Which is not really a solution
.Patrick
