I don't know why you don;t have scroll bars, that option should also be available.
You still have 30 days remaining, perhaps as that gets to 28 that may change. You might also want to try an avast repair and see if that gives the additional information.
XP - Add Remove programs, select 'avast! Anti-Virus,' click the Change/Remove button and select Repair, click next and follow.
Vista, win7 - Control Panel, Programs & Features, uninstall a program, select 'avast! Anti-Virus,' click the Uninstall/Change and select Repair, click next and follow.
You may need to reboot after the repair.