Project..

There is one project which i started working when i came here and still i am working on that for some enhancements. From the day i started and till now i haven't satisfied about the progress of this project. Which doesn't mean that i didn't put my 100% effort on this and in fact most of the time i have tried more than 100% to make this project a user friendly one. Even as a developer i never liked its user friendliness though i have learnt lot of new things to make it a big success. But nothing is working till this date and we have started from the technology which was released when i was studying in college and till the latest which is released this year. There were lot's of changes in the way the tool (project's end result is a tool) is working and at the end something is stopping us to proceed further. So we have to step back and go in other direction and we have tried almost 10 alternatives and all had cost more hours. But at the end for the manager it has to be completed in a specific time though we are putting 100% more time than the allocated time. In this circumstances one more guy (other project manger) is asking how many hours have you worked??? What did you do for the first hour on a day (Which was from 2 month back)???.
I am wondering is that the project management????? Only god has to help me in this... :-(