Anyone know of any good disk/folder encryption software for their tablet ?

I'd looked at maemo krypt, and that's not really what I'm looking for as it makes "copies", I'd like more of an encrypted volume affair.

On a "normal" linux box, I'd run through..

but that don't work on my n800.. any suggestions ?
Thanks in advance.

I am interested in getting calender an notes encrypted too.

Other Problems with security:
There is no email-client with pgp/gpg/mime-support! The Claws-Plugin is not ported until now. http://www.claws-mail.org/maemo/

Has anybody compiled otr for n800? Does anyone want to make a package...
http://www.cypherpunks.ca/otr/

What about TOR for anonymous surfing?
http://tor.eff.org/index.html.en

If anyone can give a step-by-step instruction how to compile things from source, I will try.