I have created a synth using high quality photos, but some of the photos remain blurry when viewed in a synth.  When you zoom in, it becomes a bit clearer, but still very pixelized.  

Any ideas?

Erik - could you include a link to the synth you're seeing this problem with?  It will help us in troubleshooting.  Thanks.

Here you go.  

http://photosynth.net/view.aspx?cid=F95E7099-F999-461A-972F-12551D294549

This is a new synth I created using the same photos, after I did the post.

Perhaps something worth mentioning.  When I use the synth editor to change the settings of the synth, I receive the following errors in IE7:

Line 263
Char 13
Error:  Unhandled Error in Silverlight 2 Application
	SilverLight/PhotosynthEditor.aspx
Code 4001
Category ImageError
Message: 4001 An error has occurred.
URL: http://photosynth.net/edit.aspx?cid=f95e7099-f999-461a-972f-12551d294549

Line: 6
Char: 76373
Error: Object Required
Code: 0
URL: http://photosynth.net/edit.aspx?cid=f95e7099-f999-461a-972f-12551d294549

We see this sometimes when re-uploading the same photos, and think it might happen when a previous synth was canceled or we had a problem with our image servers.

I'll let the team know we're seeing this again.

What you can do: "touch" all of your photos by adding a tag to all of them.  This is easy to do with Windows Live Photo Gallery.  Then, create the synth again.  This will force all the photos to get uploaded again and the new synth should work.