I send this message just to inform you about the strange datatable rendering on the show case of PrimeFaces.
On the Scrollable Datatable example, the "Y axis" example :
You can see just a little bug : the col borders are not aligned (for table header and table body). It seems that the Scrollbar width is not used on the header-cols resize computing.
I browse on Firefox 3.5.8 under MacOsX Leopard 10.6.2. I tried also on a Firefox under Ubuntu and the bug did not appeared.
Of course, that is a very minor bug .