Log Message:
Update to 4.3.4. From the changelog:

Version 4.3.4
14 March 2005

  -documentation changes; getmail v4 cannot run natively on Windows.  Use
  Cygwin if you must run on a Windows platform; this works.
  -remove some Windows-specific code.

Version 4.3.3
19 February 2005

  -previously, for safety, getmail would re-retrieve messages after a session
  that encountered errors.  However, getmail had enough information to safely
  remember those messages that had been successfully delivered.  This behaviour
  has been changed, to avoid delivering duplicate messages where it isn't
  necessary.  Thanks: Thomas Schwinge.
  -in output/log files, getmailrc files are now specified only by filename,
  instead of by complete paths.  This will prevent some overly-long output
  lines.
  -add Windows versions of functions to lock/unlock files, so mbox delivery
  can be used on Windows.  Thanks: Felix Schwarz.