Without any clarification, this statement is kind of meaningless. Could you give some examples of problems caused by running bulk Si and SOI on the same production line? There probably aren't any examples because nobody's pulled it off yet. BTW, nice to see you've changes your alias to something more reasonable. EP
Elmer,
It threw me for a second why I couldn't see the post you were responding to, or who the heck you were talking to. I was going to ask you what the heck was going on, Then I remembered... Right click, properties.... Ahhhh now I see.... I Guess somebody must have forgotten what I said....