sounds like Cookies perhaps.
Sounds
more like crap forum software. Just one of the
many problems here.
{Now some have suggested that the same software that operates this "forum" works
properly on other sites and that it is a problem of incorrect configuration. I reject that - not to "excuse" those who are running the facility, but on the simple basis that decently written software would not
allow such problems to occur.}
I'm also shown as Offline all the time, but it doesn't really bother me.
Doesn't exactly worry me either, but I can't quite see how it can determine "on-line" status anyway. Fairly straightforward to indicate whether someone is active in the last ten minutes as cookies will track that, and whether you are logged on or not is not really helpful as a logon is (sensibly and correctly) active for a week or more, but what else actually is "on-line"?