PROBLEM SOLVED!!! Thank you all for your input...
MAster Script wrote..."Is your Trace & Reference on with the option Transparant fills and zones?"
Thank you MAster Script...this was the problem. I had not realized trace was set and recorded on in the view map individually just like layers, pen sets, fill display, etc...trace was set to transparent on some sections and off on others.
It seemed like this problem occured "as if I pressed a button" because I probably did turn trace on without any knowledge it would cause this affect....
I greatly appreciate all of your input and help and I hope this helps someone else in the future.
I have found that 99 times out of 100 it is bonehead user error... it seems i am absolutley having the age old problem of teaching an old dog new tricks with all of the upgrades to AC12 from when i started in 1994. I was really into V8 and then made the jump to 12 after taking a journey into many other 3D apps to strengthen the presentation branch of our office...I guess this is my informal excuse
thanks again to ALL for the help and efforts!
Scott