Can you walk us through your process a bit?
Did you transfer all the cards contents to the computer first?
(And hopefully back it up)
Did you L&T the P2 Media into the edit?
Oh wait, you're version 5??
You have just the import option correct?
Have you viewed the tapeless workflow tutorial here on the cow?
I'm using FCP7 so I'm not sure if this applies When I have that exact same problem I go to the little gear icon in the Log & Transfer window and toggle "Remove Advanced Pulldown and Duplicate Frames" under Preferences which always fixes it. Don't know why, but it works.