Well I had it like this:
MyDocs -opt-swap-My new partition in EXT3
and maemo didn't see it.

Now I changed it and did as in the attachemnt so it looks like you posted.

Previously I laso had it in ext3. To be on the safe side I formated the new partition twice to ext3.

Maemo doesn't see it. I rebooted twice just to be 100%.

When I plug the phone to PC with Backupmenu my Lubuntu does see the new partition.

I think that I did something wrong bu do not know what.