I am having the same problem with my dv7t (JMicron Card Reader). This seems to be the patch:
http://www.spinics.net/lists/linux-mmc/msg06130.html -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/766539 Title: SD Card Reader Incomplete / Corrupt Files -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs