Allegheny County dumps push-button machine, turns to touch screen. http://www.post-gazette.com/pg/06096/679896-85.stm Tabulation software at seat of problem in another Pennsylvania county. http://www.timesherald.com/site/news.cfm?newsid=16430320&BRD=1672&PAG=461&dept_id=33380&rfi=6 jack driscoll