perl-BerkeleyDB strongly depends on libdb4.0.  With libdb4.1, some tests fail,
which simply means it doesnot work. With libdb4.0, all tests pass.

I see there's a problem.  All perl modules should use the same version of libdb4
as they can be loaded simultaneously.  I would like to test perl-BerkeleyDB with
libdb4.2 before libdb4.0 eliminated.

$ aptbox/apt-cache whatdepends libdb-4.0.so 
<libdb-4.0.so> 
  sendmail-8.12.10-alt4 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  python23-2.3.3-alt5 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  poedit-1.2.2-alt2.1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  perl-Cyrus-2.2.3-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  perl-BerkeleyDB-0.25-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  osec-0.6.0-alt2 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  maildrop-utils-1.6.2-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  maildrop-userdb-1.6.2-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  maildrop-common-1.6.2-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  libsasl2-2.1.17-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  librpm-4.0.4-alt32 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  libinn-2.4.1-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  inn-2.4.1-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  gift-openft-0.2.1.2-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  drac-1.11-alt3 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  db4.0-utils-4.0.14-alt11 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  cyrus-sasl2-2.1.17-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  cyrus-imapd-utils-2.2.3-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  cyrus-imapd-murder-2.2.3-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  cyrus-imapd-2.2.3-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  courier-imap-utils-2.1.2-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  courier-imap-2.1.2-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  courier-authdaemon-pgsql-2.1.2-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  courier-authdaemon-mysql-2.1.2-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  courier-authdaemon-ldap-2.1.2-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  courier-authdaemon-2.1.2-alt1 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 
  GConf-1.0.9-alt6 
    Требует: <libdb-4.0.so> 
      libdb4.0-4.0.14-alt11 

$ whatdepends libdb-4.0.so |fgrep -v libdb 
courier-imap-2.1.2-alt1.src.rpm 
drac-1.11-alt3.src.rpm 
inn-2.4.1-alt2.src.rpm 
maildrop-1.6.2-alt1.src.rpm 
osec-0.6.0-alt2.src.rpm 
poedit-1.2.2-alt2.1.src.rpm 
python23-2.3.3-alt5.src.rpm 
rpm-4.0.4-alt33.src.rpm 
sendmail-8.12.10-alt4.src.rpm 

osec-0.6.0-alt2.src.rpm 
poedit-1.2.2-alt2.1.src.rpm 
rpm-4.0.4-alt34.src.rpm 
 

Eliminated.