The ashBase.dll file did not get infected suddenly, but apparently it's been added to some virus databases. One of the previous cracked ashBase.dll files was also detected as a virus. As written in the install notes, it's just a false positive if it gets detected. Solution: If the Crack is detected and removed by avast
Browse to the install directory of avast (by default): C:/Program Files/Alwil Software/Avast5 Add the avast folder or cracked ashBase.dll to the Exclusions list of "File System Shield", and make sure that all three options [R,W,E] are checked!
