Do not set the (summer)time manually while beeing ingame using the private chat...windows clock still seems to affect some things ingame ;p
Beeing online for a negative amount of time ? Np, switching back the windows clock for 1 hour while beeing ingame, will tell you that your session time is indeed minus 59 minutes Or minus 2 hours... I dont recommend to change the date while you are beeing ingame. Just a friendly reminder. ;)