Fellow Listers, Apparently there are no known conflicts with ArcView 3.2a running a computer with a Pentium 4 processor. It appears that the my segmentation violations may have been caused by having my Lotus Notes Minder program running while I was working in ArcView 3.2a. I have not encountered a problem with running Notes Minder and AV3.2a in the past, but I do know that Lotus Notes and AV3.2a have problems working together (See messages about MSW Call Kill Timer error). The simple solution is to not run Lotus Notes or Lotus Notes Minder while you are working in ArcView 3.2a. Jeremy