[Building Sakai] Opening pdf file from Resources showing blank page

[Omer Piperdi]

We are seeing issues with opening pdf files from Resources in user's 
browser. All they see is a blank screen.

It works just fine when a users download the file and open in Acrobat 
Reader.

Is there something in Tomcat or JAVA_OPTS settings that we need to tweak?

We are on Tomcat 5.5.29, Java 1.6.0_20 and Sakai 2.7.x.

Thanks
Omer