I've been developing application using seam 2.2,primefaces 1.1, richfaces 3.3 and I encountered a difficult problem. When I click upload file, flash progress bar proceeds but nothing happens than - 100% on a progress bar but it didn't even fire handleFileUpload. What's more when I then click on clear or x on flash object firebug throws error calling ona NP object, if (jQuery...). When I remove seam filters from web.xml everything works fine but i need those filters, of course.I suppose there's a conflict between Primefaces File Upload Filter and Seam Filter. Any ideas?