I have no idea why that has been stickied as the OP has nothing to do with avast and is effectively posting a link gathered almost a year ago when avast 5 was released. At that point the original aswclear.exe was for only avast 4.8, that is why a special build was placed in forejt's web space.
So I have no idea if this has been kept up to date as it certainly hasn't followed the official file name change of aswClear5.exe either.
If that remains a sticky the link needs to be changed to the correct name and official download location,
http://www.avast.com/uninstall-utility.