First line on new page

Great Class :)
I'm having problems with paging in PDF, especially when I have tables on the pages.
Sometimes the first line of text on a new page is faded to gray.
At first I suspecte that the paging-system failed me, but my attempt to control the paging doesn't change the reult.
if ($pdf->y < 150) // I happened to know the height of each paragraph
{
$pdf->ezNewPage();
}

Please help!