Burning Crusade Lagged after quest accepting in Moonglade

[natskeeper]

I accepted lowlevel druid quest in moonglade then i have huge lag (hang idk). Game stopped, even alt ctrl delete doesnt help. After reboot and login character after loadscreen same problem. Game doesnt work. Can you help me please. Thanks

[skullatbash]

disabled questhelper addon ( it makes game crash if you start a quest with a timer)