Can't upgrade knoppix/kanotix install

[Michelle Schwager <michelle@coherentminds.com>]

Hi, I decided to use a different debian distro, so I found kanotix, a 
variant of knoppix, which apparently is based on sid.

I did an apt-get update, then apt-get upgrade.

It worked fine until I got this message:

The following packages have unmet dependencies:
libxt-dev: Depends: libxt6 (=4.3.03dfsg.1-8) but 4.3.0.dfsg.1-8 is 
installed.
unmet dependencies.  Try using -f.



I tried apt-get -if install many many times (I read sometimes it takes a 
few times), and each time it says it needs to install something about 
64k, then I get the same message.

Now anything else I try doing gives me the same error.

Is this a result of using sid?  How do I safely downgrade?

thanks
michelle