I just called bosch tech support (Feb 9 2011).
Apparently Cascade and other have recently changed the formula to exclude Phospates (you will see "phosphate-free" near the UCP Code).
This is causing white film in many dish washers.
Fix - Run hot water to sink.
Run dishwasher on most powerful setting.
After 10 minutes put 1-2 cups white vinegar into the dish washer.
Let cycle complete.
Switch to powder with phosphate (Finish).
If vinegar does not clean the dishwasher,
buy a dishwasher cleaner product.