01-05-2011 01:44 AM
On Mac OS X versions 10.4 and 10.5, if you click the Sophos Anti-Virus icon on the right-hand side of the menu bar, and then choose Scan Local Drives from the shortcut menu, in certain cases, either nothing happens or the Choose Application dialog appears.
What to do
Launch the Sophos Anti-Virus GUI and select 'Scan This Mac' from the menu bar item.