Just installed Avast 5.0.462 on my desktop. WinXP SP2 32bit after a positive experience with it on my laptop. When I go to the scan computer/scan now menu there are no scan buttons ! Everything is blank (see attached pic).
For a repair of avast. Windows, Add Remove programs, select ‘avast! Anti-Virus,’ click the Change/Remove button from the pop-up window, scroll down to Repair, click next and follow.