At least in svn, version 1.4.4 (r25188), this happens.
$ svn log -v | head -20
After printing a few lines, one error msg pops out.
svn: Write error: Broken pipe
The “broken pipe” msg is related to SIGPIPE, a signal sent usually because there is no reader down the pipe to accept what the printer is trying to write. This seems to be one unfriendly feature/bug in svn which lots of users have complained.
This does not affect the output results though. Just ignore the error msg at this stage.