My boost installation does not work. Creates an empty directory name

I enabled Boost but it fails to work. My website is at the root level. When I move around, it creates few directories but last one is empty??? Is it ok??? or that is the issue.....

Cache directory
--www.tbeez.com (website name directory)
--- An empty Directory.

The above shows up when I visit the 1st page... I have attached an image also... What could be the reason of this.

Thanks and Regards
Mukilan