I am using Windows 7 x64. I have all the latest updates & patches installed. My antivirus is Kaspersky 6.0. I have downloaded Tor Browser Bundle v2.2.33. When I launch it, Vidalia reaches the 'Authenticating...' stage then a BSOD comes & Windows reboots. This problem is happening for almost a month now. I have not installed any new software as such, just upgraded the ones installed to their latest versions. What bothers me is how an application level program can cause a BSOD which is exclusively a kernel related thing. Please help. Thanks in advance.