2. Try using the Anarki repository http://arcfn.com/2008/02/git-and-anarki-arc-repository-brief... . I believe this issue is related to the "date bug", where PG used a MacOS(?) specific system call to get the date. Have you tried looking if there are messages on the terminal where you ran Arc?
3. There isn't any. In fact arclanguage.com has indeed been visited by spam.^^