Updating that computer to Silverlight 4 has solved the problem. I will also use the 'UploaderAdvancedOption.NoSilverlight' option in the meantime to prevent this from affecting users with Silverlight 2. Please post back if you find another way to handle this issue.   Thanks,

The video is posted at the below URL. Notice the browser is unresponsive during the upload, and is completely frozen after.   Thanks,   http://vimeo.com/16173996

I took a video of the screen during the upload so you can see all the debug messages. The video is 50MB. Do you have an FTP or somewhere you would like me to upload the video?   Thanks,

Sorry for the delay. We have tried several things, including updating to the latest dll's you have available. On some of our test Mac's, the uploader will actually get through the upload process, but the browser window is frozen during the upload, and remains frozen once the upload is complete. This happens on your test site as well ...

The problem seems to be somewhat intermittent with smaller files. With larger files however (>200MB), it freezes almost every time. I cannot do your ''fulltest.aspx'' test because the max upload size is 10MB. Can you try this on your end with a bigger file? I am sure you will see the problem then.   Thanks,

The uploader worked correctly in Safari 5.0.1 but after updating to Safari 5.0.2, it no longer uploads files. The progress indicator will stay at 0% indefinately and sometimes locks the entire browser up. I tried the below demos on your site and they show the problem as ...

Thanks for the workaround. I will implement this and let you know if I have any problems.   Thanks again

Any word on this?

Thanks for the response. I tried this before posting but this event appears to fire after the file has already been uploaded, not before. I tested this by simply adding a breakpoint in the event and it fired after the progress reached 100%. I need the event to fire before any uploading occurs and also need the ability to cancel the upload from ...

I need to validate other fields on the page before the file is actually uploaded. The problem is I have no access to the event which occurs when the user starts the upload process. This appears to all be handled in your dll. I would like to receive and event when the user attempts to start the upload, validate some other data on the page ...