How can I improve the subjective speed of my application?

Question

Today my co-worker noticed that when adding a decimal place to a progress indicator leads to the impression that the program is running faster than without. (i.e. instead of 1,2

Answer 1

Here is an article about "Expressing time in your UI" and user perception of time. I do not know if it is exactly what you expect as an answer, but it is definitely worth the read.