I downloaded BitDefender Internet Security 2010 frrom your website, uninstall BitDefender 2009, reboot, then install BitDefender Internet Security 2010. The install process is OK on my Vista 32 bit Ultimate system.
But when I reboot after successful install, my Vista system fail to start due to UserInit error, and then follow by LogonUI error. The system hang and cannot boot properly.
I go into safe mode, delete all contents in Bitdefender folder and restart. The system restart OK. Then I remove BitDefender 201, then install again. The install went fine.
But when I reboot, the same problem occured. I have to remove 2010 and now reverting to 2009.
Help please