apt-get upgrade from testing broke aptitude, kpackage

[Leo Spalteholz <leo@thewoodpecker.ca>]

I did a routine apt-get upgrade today from testing.  There were a 
ton of updated packages including libc, rpm etc.  However now 
when I try to run aptitude it says loading cache and locks up. 
For kpackage it says
kpackage: error while loading shared libraries: 
librpmdb-4.0.3.so: cannot open shared object file: No such file 
or directory
So I'm guessing its the rpm upgrade that broke all that stuff.. 
Should I revert to an older version of rpm?  How do I do this 
outside of aptitude?

Thanks,
Leo