How can I disable cryptswap? I would like an unencrypted swap like before.

This is on an ubuntu 9.10 system.

It worked. First I removed the lines from /etc/fstab and /etc/crypttab.

But it was not possible (and maybe not necessary?) to use the command

sudo cryptsetup remove crytswap1

Before rebooting it was not possible (because cryptswap1 was still in use) and after rebooting cryptswap1 was already inactive.

I removed cryptsetup from the system afterwards:

sudo aptitude remove cryptsetup