I just saw that mail transport on the machine franz.stat.wisc.edu, which is the mail server for the r-project.org domain, is down. Initial attempts to revive it have not been successful. Please send mail to any of the r-project lists directly to the list server machine at stat.math.ethz.ch. That is, please use r-help at stat.math.ethz.ch and not r-help at r-project.org -- Douglas Bates bates at stat.wisc.edu Statistics Department 608/262-2598 University of Wisconsin - Madison http://www.stat.wisc.edu/~bates/