It seems the repo of proxytoys is damaged:
bash-2.05b$ svn co svn+ssh://svn.proxytoys.codehaus.org/home/projects/proxytoys/scm/trunc/proxytoys
svn: Berkeley DB error while opening environment for filesystem /home/projects/proxytoys/scm/db:
DB_RUNRECOVERY: Fatal error, run database recovery
svn: bdb: PANIC: fatal region error detected; run recovery
bash-2.05b$ svn co svn://svn.proxytoys.codehaus.org/proxytoys/scm/trunc/proxytoys
svn: Berkeley DB error while opening environment for filesystem /home/projects/proxytoys/scm/db:
DB_RUNRECOVERY: Fatal error, run database recovery
svn: bdb: PANIC: fatal region error detected; run recovery
[joehni@beaver proxytoys]$ svnadmin recover /home/projects/proxytoys/scm
Repository lock acquired.
Please wait; recovering the repository may take some time...
svn: DB_RUNRECOVERY: Fatal error, run database recovery
svn: bdb: /home/projects/proxytoys/scm/db/log.0000000038: log file open failed: Permission denied
svn: bdb: PANIC: Permission denied
svn: bdb: DB_ENV->log_put: 38: DB_RUNRECOVERY: Fatal error, run database recovery
svn: bdb: txn_checkpoint: log failed at LSN [38 1984] DB_RUNRECOVERY: Fatal error, run database recovery
svn: bdb: PANIC: DB_RUNRECOVERY: Fatal error, run database recovery
svn: bdb: /home/projects/proxytoys/scm/db/log.0000000038: log file open failed: Permission denied
svn: bdb: PANIC: Permission denied
svn: bdb: DB_ENV->log_put: 38: DB_RUNRECOVERY: Fatal error, run database recovery