Charlie,

I did a fast-read on the article and have two remarks:

1. The discussion about the deltag was held BEFORE the article in FPA.

2. Did you take care of buffered data within 'Testing the theory' ? if a select statement is run the second time. it takes considerably less time to complete, due to buffers on the OS level. It is a good idea to restart the computer before you test the two situations. The first time you can check the query without the deltag before you check the one with a deltag. After a restart you test the one with the deltag first. In this way you can get more reliable responsetimes.

Walter,