We have 10 different computers all running XP Pro and AutoCAD 2007. WE are plotting to an Océ TDS 400. Every once in awhile when plotting from a sheet set some graphics will not show up. We will get maybe a half of a word here and there, some linework may be missing, it varies from time to time. We do not have this problem if we plot the sheets individually. Is anyone else having a similar problem.