The bug is in the package libsvn1 version 1.5.1dfsg1-1ubuntu2. One solution is
to use the version 1.4.6:
Uninstall the current version. Use the option force version for install the
version 1.4.6. After, use block version option. For end, install the packages
of rapidsvn or subversion.
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this bug hit me jan. 1 2009.
thank you for the instruction to use
aptitude remove subversion
to downgrade - it worked.
could somebody please backport the additional packages which depend on libsvn
1.5.1 and subversion.
the update manager proposes to upgrade again (which will create the problem