My Alwil Software folder and sub folders are a total of 90.4MB and I periodically empty my log files via the log viewer. My data folder (included in the total) is only 48.5, so I don't know what you have been doing to get such a large size. The integ folder and the avast.int can get a bit large depending on how many programs and windows version is, mine is currently 11.6MB.