I am seeing the same on your site, not overly convinced its actually the PC at fault, your WU live updates (rapid fire) works ok
and my WD Live also works ok, so not a flash issue that i can see, so this is limited to YoWindow or an issue on your site re YoWindow
http://www.ig.gmodules.com/gadgets/proxy/refresh=86400&container=ig/http://he2.yowindow.com/yowidget3/yowidget.swf?&no_cache=129
Failed to load resource: the server responded with a status of 502 (Bad Gateway)