Thanks to the following for reporting/fixing problems, or adding new features:
  Alban Hertroys <dalroi@wit401310.student.utwente.nl> (FreeBSD)
  Murray Baker <Murray_Baker@bigpond.com> (FreeBSD)
  Claudio Fanin <fanin@indy.pd.infn.it> (Irix)
  Joan Touzet <joant@cadence.com> (Solaris)
  Ryan Losh <rklosh@rkl.org> (Window Maker manual window placement)
  Andrew Deryabin <djsf@df.ru> (more accurate update duration)

Thanks to the following for submitting clock backgrounds:
  Michael Edwards <mike24@bellsouth.net> (glowclock.xpm)
  Cyrille Mars <cmars@club-internet.fr> (swatch.xpm)
  Clemens Krammer <drk@pollux.ikn.tuwien.ac.at> (rolex2.xpm, rolexgmt.xpm)
  Tilman Pietzsch <sundevil.arts@t-online.de> (moonphase.xpm)

Finally, some notes on other XPMs:
  time-icon.xpm - From a NeXTStep icon.
  will-return.xpm - Edited from a preview at http://www.photodisc.com/.
  wood-tile.xpm - From http://themes.org/, by Michael Barnes <mibarnes@vt.edu>