Sorry to be difficult, but in devel: stat/R/nafns.R line 32 na.omit.default is now class "exclude" and na.exclude.default line 86 is still class "omit"! I know I need new glasses, don't I? Roger PS. na.*.data.frame() seem consistent!
Roger Bivand Econonic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Breiviksveien 40, N-5045 Bergen, Norway, voice: +47-55959355, fax: +47-55959393; Roger.Bivand@nhh.no