I installed it, tried to run it (quite heavy conditions with 30.000 file, but still...) and I got a very serious crash: the blue-screen type, lots of lines written in blank, and complete physical memory dump... Under JRE 1.5.
Install SyncBack instead of this one, SyncBack is much much better, lighter, with more options and a friendly GUI, and free as well...

I am amazed at the speed at which this program performs day to day backup. And just look at its size! It must be one of the smallest and most powerful backup program on the net. Along with all these features add the fact that it is FREE!!! and it becomes unbeatable. I love this program.

The program is very efficient, powerful and fast. I especially like the clean and simple interface which is so intuitive. The idea of compressing individual files into separate archives is great as it makes the program perform very fast even while compressing. I was intially missing the scheduling feature, but later found out that it was there but hidden (for a good reason!).
I doubt there is any other program which restores files as fast as this program.
There is only one shortcoming. You have to have Java runtime environment on your system in order to run this program.

This is the best backup program I have used.