PDF Mail Report: Graph segment of report is empty

[stelcheck]

I am trying to complete a setup of the PDF Server and mail view, but all the zone graphs are blank. All the packages are installed, and I sometimes am able to randomly generate a report with the flash, but then the pagination of the report becomes broken.

I am using CentOS 5.5 on x86_64 arch. I tried to use the i386 firefox for a change, to no avail.

[hjwang]

I have the same problem too. In one view, some graph in pdf can be displyed, others not.