I installed/configured samba 3 on my computer yesterday. I used my used 
smb.conf for config (this was perhaps something wrong to do). I use samba as a 
PDC so the first time I tried to login through Windows, Windows said that it 
could not load my profile (it said that the user or the Administrator should 
have access to the Roaming Promile directory). I remove this security on a 
website through regedit. When I tried to reconnect, my screen went blank, my 
computer was rebooting, I was blue... I tried 2-3 times and each time my 
computer reboot. I checked the "error" and it was a c_connect error saying that 
it needed something and it has only the half of it (sorry, I'm at job right 
now, I don't remember but I'll send you the log if you need them as soon as I 
come home).