PrimeFaces Not Working with GlassFish

Hi All,
I am using Netbeans 7.01 and GlassFish. I downloaded PrimeFaces 3.2 and added it to the library. I followed the FileUpload example in http://www.primefaces.org/showcase/ui/fileUploadSimple.jsf. It gives a warning and the holds the functioning of p:fileUpload. I inserted a p:commandButton, but it also seems to be the same. I inserted h:commandButton and it functions as expected with same back bean method. But <p:spinner /> and p:growl are functioning as expected.

The warning in the GLassFish 3.x log is WARNING: PWC4011: Unable to set request character encoding to UTF-8 from context /web, because request parameters have already been read, or ServletRequest.getReader() has already been called.
I got rid of that warning after following the discussion on http://code.google.com/p/primefaces/issues/detail?can=2&start=0&num=100&q=&colspec=ID%20Stars%20Type%20Status%20Priority%20TargetVersion%20Reporter%20Owner%20Summary&groupby=&sort=&id=1195, still there was no change in the functionality.

Backbean Code

xhtml code

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:p="http://primefaces.org/ui">
    <h:head>
        <title>Facelet Title</title>
    </h:head>
    <h:body>
        <h:form enctype="multipart/form-data">
            <p:fileUpload fileUploadListener="#{fileUploadController.handleFileUpload}"
                          mode="advanced" 
                          update="messages"
                          sizeLimit="100000" 
                          allowTypes="/(\.|\/)(gif|jpe?g|png)$/"/>

<p:growl id="messages" showDetail="true"/>
            <h:commandButton value="h command button" action="#{fileUploadController.demoMessage()}" >
            </h:commandButton>
            <p:spinner />  
            <p:commandButton  value="p command button"  action="#{fileUploadController.demoMessage()}" >
            </p:commandButton>
           
            
        </h:form>
    </h:body>
</html>

I will be grateful to someone who can detect the issue.
Thanks in advance.