Windows 7 Login Hang After Reboot

Every time I reboot my PC (Windows 7 - 64bits) it hang for 5 to 15 minutes when I attempt to login. After I signed, I have the "welcome" screen and have to wait to get the Desktop. I do not have the problem if log off and login again. It only append on the first login after reboot.


I uninstalled Bitdefender and the problem disappears. The problem comes back whenever I reinstall Bitdefender. I tried uninstall/reinstall several time, and got the same result. So I guess the problem come from Bitdefender.


In the event logger, I got 3 warnings every time the PC hangs:


1) 7044 : The following service is taking more than 4 minutes to start and may have stopped responding: Server


2) 6005 : The winlogon notification subscriber <Profiles> is taking long time to handle the notification event (Logon).


3) 6006 : The winlogon notification subscriber <Profiles> took 70 second(s) to handle the notification event (Logon).


Thanks for your help.