I just purchased and received TI2009 after using after previously using TI 10 and upgrading to TI 11. I am running the Vista operating systerm with Norton Internet Security 2009. I initially installed TI2009 from the disk I received without updating to the latest build as I kept getting an error. I am not sure which build I received. The installation went smoothly but later found my card reader along with the card ports on my monitor disapeared and I could not figure out a way to get them back. After uninstalling TI2009 using Vista's Add/Remove programs the card readers were back and working. I next tried to install the latest build (Build #9796) from the web site. This installed but after the computer took a while to reboot I got a BSOD. Rebooted again found that my card readers were still there but the computer was running slow and I got another BSOD. Rebooted a third time, the computer ran very slow so I again removed TI2009 and the computer is working again as it should. Could the antivirus software be interferring with the installation, or other ideas?