I have two worksheets automatically pulling in stock prices. While Im typing anything in any cell in Worksheet A, all of a sudden Worksheet B will come to the front and I now find myself typing in Worksheet B. AutoSave is turned off. I saw this a few months ago, but it went away for some unknown reason, and now its back again. I dont know if there is an Excel Setting that controls this behavior.

Has anyone seen this before? THANKS!