is it me or is the newest member thing displaying old members???

This might help. However, at the time of writing this post the newest member I see is Mek4563 who does appear to be very new (no miles driven on LFS World profile, no posts on forum and join date of today).

at me now it shows that: maxime333 is the newest member. And in his profile he joined 12th March 2008... but can that be when i bouth the lisens and mabe he joined the forum today?

I think that your join date is classed as when you actually signed up to the forum and the newest member bit is when you became an active member, so you could have signed up as a member ages ago but if you didnt ever log in until today then you would show as the newest member.