using appsaudit, I noticed that when you check for updates the full path of each extension is listed - i.e. /mnt/sda1/tce/optonal/extension_name - which means that most of the extension names are not fully displayed without scrolling sideways.
Since the full path of the tce/optional directory is displayed at the top of the left hand pane, could we show just the extension names in the left hand pane to make them easier to see?