There is a "lbook V3 ext", kernel 220.127.116.11, firmware V1.27U.080919.
When you connect via USB without the SD card under Windows everything is working correctly (see the built-in "removable disk" on 512MB), but under Linux to mount it fails. On the forum and on the support response could not be obtained, although the problem is outrageous: book works on Linux, and compatible with Windows and not compatible with Linux.
When connecting with an inserted SD card under Linux with no problems mounted the contents of the card.
I know that there are many more new firmware, but reading them changes I didn't see the fix exactly this problem, and discussion of new bugs in new firmware versions on the forum would be updated "at random".
If you have out of the box works access to internal memory under Linux on lbook V3 — plz tell the firmware version.