small suggestion

I'd like to see that the date of the last completed defrag is added to each drive that appears in the defraggler window. Sometimes we forget the last time we defragged and this information would be valuable to the user. Thank you!

I don't think its a matter of time its a matter on how bad it is. If you just Analyze it will tell you the percentage. Anything more that 10% and it needs defragging to me. ;)

I don't think its a matter of time its a matter on how bad it is.

Agreed - if it needs defragging then defrag it. If you haven't defragged for a year but it doesn't need it then leave it alone!