Crash???

Recently i had a laptop consist of Window Vista...The problem is i use
WindowXP in my desktop got no problem in playing my current game[MUonline].N
i use my laptop with Vista,its keep disconnect from the game...Some of my
friends say it was a crash with Vista...Is there any solution to fix the
problem? maybe should downgrade back to WindowXP...Plss give me advise...

Maybe a Firewall problem?

Maybe a Firewall problem?
Try running the game in Admin mode:
Right click/Compatibility/Something with admin ;)

Hope it works..
Cheers!