In "Macintosh HD", I have: %8BE%B8%897%89$%E8%97- which cannot be opened, and opt which contains "avg" which contains "avg9" which contains an assortment of files and folders. I deleted these two, but I haven't emptied trash yet. The first folder with the weird name hasn't re-appeared, although "opt" re-appeared, with child "avg" -> "avg9" -> "cfg" with a bunch of .lock files in it. What do these two files do? And I don't have avg on my system. Only Sophos.