As simple as that.. When I connect the HDD it asks for a password since it is encrypted. After typing the password it freezes my MBA 5 minutes (first time experiencing lag ever) until I can type a password again because it is registering it as an invalid password. I don't wish to hear comments about "may be you are typing the wrong password", I am not. My HDD has 2 partitions, one for my movies, one for TM, both with the same password, the first partition opens nicely, the second one creates a meltdown in my computer and I have to cancel the access because I doesn't let me go through. Any one has an input on this? Perhaps same experience? Thank you! Edit: So.. the password was accepted on the background even after I exited the window that asks for the password and was told by the computer that my password was invalid. And TM started its normal backups. This is serious stuff to me now.