Isaac, I have tested that but it does not work. everytime is a mismatch with Last Post Date & IP Address.
Last Post Date & IP Address must be when the member last made a post and not last time he login and that is not the same I think.
I may be wrong of course but when I get a warning PM saying that these members made a multiple login on same IP address I don't expect it to be in Australia and Scotland which shows when I check Last Post Date & IP Address.
I'll await the bug fix when it arrives.
cheers