1) Not seeing the replies column. If you have your postlist screen in expanded mode then it doesn't show the replies column. Not sure if that is your case, but there is no config option for the replies column.
2 and 3) Are you using cookies or sessions? If you are using sessions can you check one of your session temp files after visiting a forum and tell me if you see a visit portion?
4) Probably a bug. I always preview and haven't started bug testing on this script, but I'll take a look and track it down. (Further inspection on this, and can't find the problem. Authenticating with or without preview is done right at the start)
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Scream

Posted from the PHP Port Site (Post might be quirky)