I installed TI 11.8053 on my notebook purchased 31 May 2008. Program, so far has run very well. Compresion for the C drive was over 50%. As expected, compression of the Recovery partition (D drive) was poor or non-existent. I have run several backups, full and differential, using two Seagate FreeAgent Desktop ST305004FDA1E1-RK 500GB 7200 RPM External Hard Drives. After two of the backups, I could not remove the USB drive without abnormally shutting dowm by turning off power on the notebook. What is the preferred way to close TI? Perhaps, the Close button should not be used??