I'll check if anything can be done to avoid reading fpdownload.adobe.com/pub/swz/crossdomain.xml if the swz files have already been downloaded.
You can avoid loading adobe.com's crossdomain.xml by hosting the swz files on your own server. Just copy the swz files to the same directory as your application and modify the RSL URLs. The RSL URLs are modified by removing the URL pointing to the adobe hosted site and keeping the "framework_4.0.0.x.swz" URL.
thank you for providing resolution of my problem ,all things looks like done ,as you said ,i hosted all swz files at my local host and removed RSL URL linked to adobe, then cleared flashplayer cache on some mechine,the swf loaded then quickly !
thank you again!!!!
Glad it worked. You didn't really need to clear the Flash Player cache. Unlike the browser cache the Flash Player can be used not matter what domain or path a swz file is requested from.