Strange update error message and system will not update

[Philip Moller]

Charles Layno wrote:

>I have 3 FC2 machines and recently did an apt-get update on them. All seemed 
>to go well. Today I tried to do another update and I now get the following 
>update message on all three machines. One is a Dell server, and the other two 
>are workstations.
>
>rpmdb: Program version 4.3 doesn't match environment version
>error: db4 error(-30974) from dbenv->open: DB_VERSION_MISMATCH: Database 
>environment version mismatch
>error: cannot open Packages index using db3 -  (-30974)
>error: cannot open Packages database in /var/lib/rpm
>E: could not open RPM database
>
>This looks really bad. Is it as bad as it looks and is there a way to recover 
>from this without having to reinstall the whole system?
>
>Charles Layno
>Greensboro, NC
>
Try:
rpm --rebuilddb

And use YUM instead of APT.