Great plugin. I enabled gzip like you recommended and pages load much quicker. Saw in a couple online tools a 78% compression with gzip. But I have a Firefox/caching issue with another plugin.
I'm using the DB Youtube RSS Widget and found that the youtube thumbnails & links won't display in Firefox browser when not logged-in. When logged-in, it displays correctly. IE, Chrome and Opera have no issues.
Any problems reported from others on this? I submitted the question to the youtube plugin developer, too.